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Background: Hyperkeratotic hand and foot dermatitis significantly affects quality of life. Some patients respond suboptimally to topical corticosteroids and have multiple recurrences., Objective: Our aim was to compare the efficacy and safety profile of apremilast and topical corticosteroid versus corticosteroid alone in hyperkeratotic hand and foot dermatitis., Methods: This randomized controlled study involved 77 patients treated for 3 months. Group A (39 patients) received mometasone furoate 0.1% cream with oral apremilast 30 mg twice daily, and Group B (38 patients) received mometasone alone. They were assessed monthly using the Hand Eczema Clinical Severity Index (HECSI) and Visual Analogue Scale (VAS) scores for pruritus. Investigator Global Assessment (IGA) and Quality of Life in Hand Eczema Questionnaire (QOLHEQ) were conducted at the end of 3 months., Results: The HECSI, VAS score, and QOLHEQ showed a significant decrease in both groups from baseline to the third month. Intergroup comparisons of HECSI failed to reach the significance level. When compared, patients receiving apremilast had significantly better improvement in the third month according to the Patient Global Assessment (PGA) and Investigator Global Assessment (IGA). They also had a smaller number of flares., Conclusion: Adding apremilast to topical corticosteroid leads to better patient and physician-perceived improvement and reduces the number of flares in hyperkeratotic hand eczema., (© 2024 the International Society of Dermatology.)

We investigated the detailed characteristics and proportions of typical and atypical rashes in 28 patients with adult-onset Still's disease (AOSD) by retrospectively examining the clinical symptoms and pathological features. The patients consisted of six males and 22 females aged between 23 and 85 years. The skin rashes observed in the study population were as follows: (i) typical rash in six cases, (ii) atypical rash in 19, and (iii) both typical and atypical rash in three cases (in all three cases, typical rash preceded atypical rash). Furthermore, we classified atypical rashes into persistent pruritic papules and plaques (PPPP) and others. In 22 cases of atypical rashes, 10 cases had PPPP. In a comparison between young-onset (<65 years) (n = 16) and elderly-onset (≥65 years) (n = 12) AOSD cases, typical rashes were observed more frequently in the young-onset cases. Regarding atypical rashes, PPPP was significantly more common in the elderly-onset cases., (© 2024 Japanese Dermatological Association.)

Objective: The aim of this study was to examine the utility of the albumin-bilirubin score in cases of intrahepatic cholestasis of pregnancy., Methods: A total of 413 patients (182 intrahepatic cholestasis of pregnancy, 50 suspected intrahepatic cholestasis of pregnancy, 181 healthy controls) enrolled in this study. Patients with typical pruritus and bile acid levels >10 μmol/L are defined as the intrahepatic cholestasis of pregnancy group. Patients with pruritus have the same pattern as intrahepatic cholestasis of pregnancy, but who are ultimately diagnosed with other dermatoses of pregnancy are defined as suspected intrahepatic cholestasis of pregnancy. Demographic data, laboratory parameters, and albumin-bilirubin scores were compared between three groups. Correlation analysis was performed on the albumin-bilirubin score and bile acid levels. Also, receiver operating curve analyses were performed to evaluate the predictive performance of the albumin-bilirubin score for intrahepatic cholestasis of pregnancy diagnosis., Results: The albumin-bilirubin score of the intrahepatic cholestasis of pregnancy group was significantly higher than the other groups. A positive, weak correlation was found between the albumin-bilirubin score and bile acid levels in the intrahepatic cholestasis of pregnancy group. The receiver operating curve curve analyses showed albumin-bilirubin score has significant performance for the prediction of intrahepatic cholestasis of pregnancy in all subjects (area under the curve: 0.726, 95%CI 0.679-0.774, p<0.001) (sensitivity: 69%, specificity: 64%). The detection rate for albumin-bilirubin score was calculated as 67.3%. The positive predictive value was 3.95% (CI 2.9-5.3%), and the negative predictive value was 98.9% (CI 98.6-99.2%)., Conclusion: This study indicated higher albumin-bilirubin score levels in the intrahepatic cholestasis of pregnancy group and a positive relationship between serum bile acid levels and albumin-bilirubin score. Therefore, albumin-bilirubin score could be a cost-effective liver function test for pregnant women with intrahepatic cholestasis of pregnancy.

Atopic dermatitis (AD) is one of the most prevalent inflammatory skin conditions, characterized by recurrent eczema with varying degrees of erythema, pruritus, xerosis, and pain. Although there are many treatment options for AD, efficacy is limited by poor adherence, especially for topical medications. Patient preferences for certain vehicle formulations and frequencies of administration, as well as patient aversion to certain adverse effects, can negatively impact adherence and treatment success. Discrete choice experiments (DCEs) are used to assess preferences in a manner comparable to clinical decision-making. Six discrete choice experiments on AD were analyzed to create a comprehensive data sheet of patient and physician preferences for medication. When choosing a medication, skin clearance, itch relief, and flexible treatments were most important to patients. J Drugs Dermatol. 2024;23(10):847-851.&nbsp; doi:10.36849/JDD.8056.

Background: Itch terminology is ambiguous. How itch was described in online materials and how terminology influenced the readability of these materials was previously unknown., Materials and Methods: Two groups of search terms, itch and prurigo, were translated into five of the most prevalent European Union (EU) languages. The itch group consisted of "itch" and "pruritus." The prurigo group consisted of "prurigo," "prurigo nodularis," and "chronic prurigo". Then, a search of the terms in each language was queried in the Google search engine in the private mode of the Internet browser. The first 50 results generated were assessed for suitability. Patient education was the primary objective of the materials provided, with no barriers or advertisements included. In cases where the terms yielded identical outcomes, any duplicated materials were omitted from the analysis. When translating search terms within a group led to just one shared transcription, the results were attributed to the search term with the most similar syntax. The Lix score was utilized to assess readability., Results: 314 articles in English, German, Italian, French, and Spanish were evaluated. The term "pruritus" was the most commonly used description for the sensation of itching, with 142 (45%) articles included. Overall, the mean Lix score was 54 ± 9, classifying all articles as hard to comprehend. Articles in the itch group had significantly (P < 0.001) lower mean Lix score (52 ± 9) than materials in the prurigo group (56 ± 10)., Conclusions: Despite being more accessible to conceptualize, skin conditions such as prurigo had lower readability compared to information about the itch itself. The distinction between "itch" and "pruritus" was unclear., (© 2024 the International Society of Dermatology.)

Background: Topical corticosteroids are widely used as a treatment for itch and wheals (urticaria), but their benefits and harms are unclear., Objective: To systematically synthesize the benefits and harms of topical corticosteroids for the treatment of urticaria., Methods: We searched MEDLINE, EMBASE, and CENTRAL from database inception to March 23, 2024, for randomized trials comparing topical corticosteroids with placebo for patients with urticaria (either chronic spontaneous or inducible urticaria or acute urticaria elicited from skin/intradermal allergy testing). Paired reviewers independently screened records, extracted data, and assessed risk of bias. Random-effects meta-analyses addressed urticaria severity, itch severity (numeric rating scale; range 0-10; higher is worse), and adverse events. The Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach informed certainty of evidence ratings. PROSPERO registration: CRD42023455182., Results: A total of 19 randomized controlled trials enrolled 379 participants with a median of mean age of 30.1 (range 21.1-44.0) years. Compared with placebo, topical corticosteroids may reduce wheal size (ratio of means 0.47, 95% CI 0.38-0.59; low certainty) and itch severity (mean difference -1.30, 95% CI -5.07 to 2.46; very low certainty). Topical corticosteroids result in little to no difference in overall adverse events (94 fewer patients per 1000, 95% credible intervals 172 fewer to 12 more; high certainty)., Conclusion: Compared with placebo, topical corticosteroids may result in a reduction of wheal size and little to no difference in overall adverse events. Topical corticosteroids may reduce itch severity, but the evidence is very uncertain. Future large, randomized trials addressing the use of topical corticosteroids would further support optimal urticaria management., (Copyright © 2024 The Authors. Published by Elsevier Inc. All rights reserved.)

Notalgia paresthetica (NP) is a sensory neuropathy characterized by chronic pruritus, skin pain, and other pathologic sensations affecting the mid-to-upper back. NP may be under-recognized and under-diagnosed, with limited data available on its symptom presentation and treatment patterns. NP-DERM was an internet-based survey of dermatologists (n = 650) from 8 different countries on their perspectives on NP symptoms and current treatment practices. Dermatologists typically treated a median of 12 patients with NP per month. Dermatologists reported that itch (pruritus) was the most common symptom for their patients with NP, followed by hyperpigmentation and sensitive skin. The most burdensome NP symptom was pruritus, followed by burning or hot sensation, and painful or raw skin. The most prescribed treatments included non-medicated skin care, topical corticosteroids, oral antihistamines, medicated topicals, and gabapentin or pregabalin. Physicians reported low satisfaction with available treatments. The most common reason for physicians to discontinue patients' therapy was lack of response.

A 24-year-old male patient was seen with generalized itch and papules located at the hands. Staining of a papule with a purple medical skin marker, followed by wiping of the ink with an alcohol-gauze revealed an ink-filled burrow. These findings are consistent with a positive burrow ink test, and a clinical diagnosis of scabies was made.

Introduction: Vitiligo is a prevalent skin disorder characterized by the destruction of melanocytes, leading to depigmented patches across various areas of the body. Interleukin (IL)-31 has been implicated in the development of pruritus and skin inflammation, potentially contributing to cutaneous symptoms. This study measures IL-31 levels in vitiligo patients with and without pruritus, comparing them to healthy controls, and explores the relationship between IL-31 levels, disease activity, and other clinical factors to assess its potential role in the early diagnosis of vitiligo., Methods: Ninety individuals were enrolled in the study and equally divided into three groups: vitiligo, vitiligo with pruritus, and healthy controls. The serum level of IL-31 was measured using the enzyme-linked immunosorbent assay (ELISA)., Results: Significant differences in IL-31 levels were observed across all groups. IL-31 levels were highest in vitiligo patients with pruritus, followed by those without pruritus, and lowest in healthy controls, with mean values and standard deviations of 196 ± 67.28, 152.10 ± 74.39, and 80.03 ± 32.30 pg/ml, respectively. In addition, IL-31 levels in serum showed significant differences in relation to disease activity in both vitiligo groups. Positive correlations were found between IL-31 levels and the Vitiligo Area Scoring Index (VASI) and Vitiligo Disease Activity (VIDA) in both patient groups, as well as between IL-31 levels and lesion extent in vitiligo patients without pruritus. In patients with pruritus, IL-31 levels also positively correlated with age and the 5-dimension itch scale score., Conclusion: IL-31 may serve as a crucial marker and play a significant role in the early diagnosis of vitiligo in patients both with and without pruritus.

Introduction: Primary biliary cholangitis (PBC) is a chronic liver disease, leading to cirrhosis and impairment of patient-reported outcomes. We aimed to develop a PBC-specific version of the Chronic Liver Disease Questionnaire (CLDQ) instrument to assess health-related quality of life of patients with PBC., Methods: From our Liver Database, we included patients with PBC who had CLDQ, clinicolaboratory data, and completed Short Form-36 and The Functional Assessment of Chronic Illness Therapy-Fatigue. The 29 items of CLDQ were subjected to item reduction, exploratory factor analysis, and fed into a standard instrument validation pipeline., Results: Data were available for 108 patients with PBC: 57 ± 11 years, 7% male, 58% cirrhosis, and 24% decompensated cirrhosis (Child B and C). Of 29 CLDQ items, none met the exclusion criteria. Exploratory factor analysis (95% of variance) returned 7 factors. Based on evaluation of factor loadings and face validity, those factors yielded 7 domains (Diet, Emotion, Fatigue, Itch, Symptoms, Sleep, and Worry). Good to excellent internal consistency (Cronbach's α 0.85-0.93) was observed for 5/7 domains. For the remaining 2 domains (Diet and Itch), additional items obtained from patients, experts, and review of the literature were included. For 5 domains, known-group validity tests discriminated between patients with PBC with and without cirrhosis, advanced cirrhosis, and depression ( P < 0.05 for 3-5 domains). The CLDQ-PBC domains were correlated with relevant domains of Short Form-36, CLDQ-PBC Fatigue correlated with Fatigue Scale of Functional Assessment of Chronic Illness Therapy-Fatigue (rho = +0.85), and CLDQ-PBC Worry domain negatively correlated with alkaline phosphatase (rho = -0.38, P = 0.0082)., Discussion: The CLDQ-PBC has been developed based on the original CLDQ. The new instrument has evidence for internal consistency and validity and is being fully validated using an external cohort., (Copyright © 2024 The Author(s). Published by Wolters Kluwer Health, Inc. on behalf of The American College of Gastroenterology.)

Background: Analyses of patient evaluations and barriers to the implementation of teledermatology procedures are still rare. The aim of this study was to determine whether administrative processes have an influence on the patient evaluation of telephone and video consultations., Methods: With the help of a patient survey, assessments of the processes and organisation surrounding the outpatient appointment were asked. These were then compared to the assessment of whether the telephone or video consultation is an alternative to on-site consultation., Results: In all, 1538 patients took part in the survey. Significant correlations were found between the evaluation of the telephone or video consultation and the distance between the place of residence and the outpatient clinic, whether the patient had already been seen several times or for the first time, as well as the evaluation of the waiting time for the appointment, the organisation before the appointment and the waiting time in the outpatient clinic., Conclusions: The study shows that even after the Coronavirus pandemic, telephone and video consultations remain an important tool for patients to contact their physician. However, patients' perceptions of the processes around the outpatient appointment have an influence on their willingness to participate in a digital consultation., (© 2024. The Author(s), under exclusive licence to Springer Medizin Verlag GmbH, ein Teil von Springer Nature.)

Competing Interests: Conflicts of interest Drs Fukasawa and Yoshizaki belong to the Social Cooperation Program, Department of Clinical Cannabinoid Research, supported by the Japan Cosmetic Association and the Japan Federation of Medium ＆ Small Enterprise Organizations. Drs Enomoto, Yamashita, Miyagawa, Sato, and Yoshizaki Johnson have no conflicts of interest to declare.

Background: Atopic dermatitis (AD) is characterized by flares of eczematous lesions accompanied by intense pruritus, which can tremendously impact quality of life (QoL). Despite continuous therapeutic progress, there are still unmet needs regarding AD management., Objective: This sub-analysis of the cross-sectional global study MEASURE-AD with 1558 AD patients treated with or eligible for systemic therapy aimed at characterizing the real-world burden of 98 patients in Austria and Switzerland. Patients were enrolled between October 2019 and June 2020. Assessing patient characteristics, treatment, disease severity, and patient-reported outcomes., Results: Mean age at time of diagnosis was 19.4 years with delayed diagnosis by an average of almost 3 years. All patients obtained treatment, 57.1% of them systemic therapy, mostly dupilumab. 45.9%-73.5% of all patients presented with moderate to severe disease and more than half of them suffered from moderate to severe pruritus, impaired QoL, and had experienced several flares. Furthermore, a negative impact on sleep, mental health, social life, and work productivity was revealed., Conclusions: This analysis confirms that AD is associated with a multidimensional burden despite treatment and demonstrates unmet needs regarding diagnostic delay, under-treatment with systemic therapy, and the development of efficacious therapies to improve clinical symptoms and QoL.

Background: Notalgia paresthetica (NP) is a form of neuropathic itch characterized by recurrent itch in the mid back. Much about NP remains unclear, especially the patient experience., Objectives: The N europathic I tch Patient Su rve y (NIRVE) was a global, online survey conducted to better characterize the symptom burden of neuropathic itch from the patient perspective., Patients and methods: This report focuses on the symptom burden of the subpopulation of NIRVE participants with a self-reported diagnosis of NP ( N  = 91). Respondents reported visiting a median of 2 healthcare providers (HCPs) for their symptoms before receiving an accurate diagnosis of NP., Results: The most common cutaneous symptoms ever experienced were itch/pruritus, sensitive skin, painful or raw skin, numbness, and tingling. The symptoms reported by the most respondents as currently being experienced included itch/pruritus, numbness, painful or raw skin, tingling, and burning or hot sensation. Of patients currently experiencing symptoms, numbness and itch/pruritus were ranked as the most intense, followed by tingling, burning or hot sensation, and then painful or raw skin. Most patients consult multiple healthcare providers (HCPs) before receiving a diagnosis for their condition., Conclusion: Itch is overwhelmingly the most prevalent symptom of the condition, although half of patients also report experiencing sensitive skin, painful or raw skin, numbness, or tingling.

Anhedonia, the reduced ability to experience pleasure, is a prevalent symptom in various psychiatric disorders, but has not been investigated in dermatological conditions, particularly those characterized by chronic itch. This study aimed to examine the prevalence and clinical correlates of anhedonia in patients with chronic itch. A cross-sectional study was conducted in 137 patients with chronic itch, classified according to the International Forum for the Study of Itch (IFSI) classification. Anhedonia was assessed using the Snaith-Hamilton Pleasure Scale (SHAPS) and Anticipatory and Consummatory Interpersonal Pleasure Scale (ACIPS). Itch severity, quality of life, and psychological distress were assessed using the Visual Analogue Scale (VAS), Verbal Rating Scale (VRS), ItchyQoL, and Hospital Anxiety and Depression Scale (HADS), respectively. The mean SHAPS score was 1.0 ± 1.7 points, and the mean ACIPS total score was 76.9 ± 16.2 points. In the study sample, 13.1% of patients were identified as anhedonic, with a higher prevalence observed in those with severe and very severe itch. Anhedonia was significantly correlated with itch severity (R = 0.2, p=0.02 for 24 h VASmean and SHAPS; R = 0.2, p = 0.01 for 24 h VASmax and SHAPS), anxiety symptoms (R = 0.3, p < 0.001 for SHAPS and HADS-anxiety), depression symptoms (R = 0.4, p < 0.001 for SHAPS and HADS-depression), and impairment in quality of life (R = 0.2, p = 0.014 for SHAPS and ItchyQoL). Anhedonia is a significant and prevalent aspect of psychological distress in patients with chronic itch. Addressing this symptom may not only improve patients' overall mental health but also enhance the effectiveness of treatments for chronic itch. Future research is needed to elucidate further the mechanisms underlying the relationship between anhedonia and chronic itch and to develop targeted interventions for this population.

Objective: To evaluate the effectiveness and feasibility of combined treatment with compound fluocinolone acetonide cream and guaiazulene in patients with neurodermatitis., Methods: A prospective study was conducted on 92 outpatient patients diagnosed with neurodermatitis at our dermatology department from January 2022 to December 2023. Using a random number table, these patients were evenly divided into a control group and an experimental group, with 46 individuals in each group. The control group received treatment with compound fluocinolone acetonide alone, while the experimental group additionally received oral guaiazulene tablets. Clinical symptom and sign scores, Visual Analog Scale (VAS) scores, skin lesion itching scores, comprehensive efficacy, treatment onset time, adverse reactions, and quality of life were monitored, recorded, and compared., Results: In the 2-week treatment period, patients in the experimental group showed significant improvement in skin symptoms and signs, with scores significantly lower than those in the control group (P < 0.05). After treatment, VAS and skin lesion itching scores in the experimental group were significantly reduced (P < 0.05), demonstrating a more pronounced therapeutic advantage compared to the control group (P < 0.05). Although the effective rate in the experimental group was as high as 86.96%, there was no significant advantage compared to the control group, and the difference in treatment efficacy was not significant (P > 0.05). The treatment onset time in the experimental group was significantly shorter than that in the control group (P < 0.05), and the incidence of adverse reactions was lower (P < 0.05). The quality of life in the experimental group improved significantly after treatment, with DLQI scores lower than those in the control group (P < 0.05)., Conclusion: Combined treatment with compound fluocinolone acetonide cream and guaiazulene demonstrates excellent efficacy and feasibility in the management of neurodermatitis. Compared to standard treatment alone, it yields superior clinical outcomes., (© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)

Pruritus is a common complaint in dermatology outpatient clinics. It is defined as chronic pruritus if the symptoms last 6 weeks or longer. Fibromyalgia is a chronic, extensive pain syndrome that is well-known for its clinical signs, such as exhaustion, sleeping disorders, and some other pain symptoms. In the present study, it was investigated whether chronic pruritus patients were accompanied by fibromyalgia. The study included 100 patients with chronic pruritus and 100 controls without dermatological disease. All of the individuals were first evaluated in the dermatology clinic, and the patients having any musculoskeletal symptoms were then referred to a physiatrist in terms of accompanying fibromyalgia syndrome. Fibromyalgia was detected in 29 (29%) of 100 chronic pruritus patients and 6 (6%) of 100 patients in the control group. There was a statistically significant difference between the two groups regarding accompanying FM (p < 0.001). In the chronic pruritus group, pruritus severity, according to VAS and the four-item itch questionnaire score, was statistically significantly higher in patients with fibromyalgia than in patients without fibromyalgia (p = 0.027, p = 0.002, respectively). In addition, the number of patients with severe/very severe chronic pruritus was statistically significantly higher in the group accompanied by fibromyalgia (p = 0.023). It may be suggested that fibromyalgia is a frequent disease that can accompany chronic pruritus. Clinicians should keep in mind that there is a possibility of the coexistence of both diseases. This study calls attention to the complex relationship between chronic itch and pain., (© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)

Background: High-quality patient-reported outcome (PRO) measures for dialysis patients with chronic pruritus are urgently needed. However, no known, well-validated multidimensional tools have been investigated to measure pruritus symptoms in dialysis patients., Objectives: To examine the psychometric properties of a multidimensional tool of chronic pruritus, the Uraemic Pruritus in Dialysis patients (UP-Dial) 14-item scale, by comparing haemodialysis and peritoneal dialysis modality., Methods: This validation study used data from the Thai Renal Outcomes Research-Uraemic Pruritus, a prospective, multicentre, longitudinal study. Data for this study were collected from 1 February 2019 to 31 May 2022. The adult sample of 226 haemodialysis and 327 peritoneal dialysis patients fulfilled the criteria of chronic pruritus based on the International Forum for the Study of Itch. Psychometric properties of the UP-Dial included validity and reliability, as measured across haemodialysis and peritoneal dialysis patients. Patients completed a set of anchor-based measurement tools, including global itching, Dermatology Life Quality Index (DLQI), EuroQoL-5 dimension-5 level (EQ-5D-5L), Kidney Disease Quality of Life-36 (KDQOL-36), Pittsburgh Sleep Quality Index (PSQI), global fatigue, Somatic Symptom Scale-8 (SSS-8) and Patient Health Questionnaire-9 (PHQ-9)., Results: From the patient's perspective, face validity was satisfactory for both dialysis samples. Psychometric analyses of the UP-Dial for each dialysis sample had good convergent validity. Spearman rho correlations indicate a positively strong correlation (0.73-0.74) with global itching, a positively moderate correlation (0.33-0.58) with DLQI, PSQI, global fatigue, SSS-8 and PHQ-9, and a negatively moderate correlation (-0.39 to -0.58) with EQ-5D-5L and KDQOL-36. The discriminant validity was satisfactory with a group of moderate and severe burden of pruritus for both dialysis samples. For scale reliability, the UP-Dial revealed excellent internal consistency (Cronbach's α = 0.89 and McDonald's ω = 0.90) and reproducibility (intraclass correlation 0.84-0.85) for both dialysis samples. Regarding psychometric properties, no statistically significant differences between dialysis samples were observed (all P > 0.05)., Conclusions: The findings reaffirm good measurement properties of the UP-Dial 14-item scale in haemodialysis and peritoneal dialysis patients with chronic pruritus. These suggest a transferability of the UP-Dial as a PRO measure in clinical trial and practice settings., Competing Interests: Conflicts of interest M.M.S. is an advisor/consultant for AstraZeneca, Bayer, GlaxoSmithKline (GSK) and Otsuka. J.A.B. is a consultant and has received research grants from Allakos, Amgen, AstraZeneca, Celldex, Escient, Genentech, GlaxoSmithKline (GSK), Jasper, Novartis and Sanofi Regeneron; has a leadership or fiduciary role in the American Academy of Allergy, Asthma & Immunology (president); Hereditary Angioedema Association (member activities board); Interasma (vice president); and the World Allergy Organization (board of directors). J.C.S. is an advisor/consultant for AbbVie, Leo Pharma, Novartis, Pfizer, Sanofi-Genzyme, Trevi, UCB and Vifor; is a speaker for AbbVie, Almirall, Eli-Lilly, Janssen-Cilag, Leo Pharma, Novartis, Pfizer and Sanofi-Genzyme; is an investigator (principal investigator in clinical trials) for AbbVie, Almirall, Amgen, AnaptysBio, BMS, Boehringer Ingelheim, Celtrion, Galapagos, Galderma, Helm AG, Incyte, InfraRX, Janssen-Cilag, Kliniksa, Leo Pharma, Medimmune, Menlo Therapeutics, Merck, Novartis, Pfizer, Regeneron, Teva, Trevi and UCB; and has a leadership or fiduciary role in the Polish Dermatological Society (president). The other authors declare that they have no relevant conflicts of interest., (© The Author(s) 2024. Published by Oxford University Press on behalf of British Association of Dermatologists. All rights reserved. For commercial re-use, please contact reprints@oup.com for reprints and translation rights for reprints. All other permissions can be obtained through our RightsLink service via the Permissions link on the article page on our site—for further information please contact journals.permissions@oup.com.)

The pattern of itching in patients with atopic dermatitis has not been systematically studied. Therefore, this study aimed to assess the pattern of itching in adults with atopic dermatitis using questionnaires to assess for a circadian rhythm of itching in participating patients at a single institution (n = 241). A self-report questionnaire was used to assess circadian rhythm and intensity of itching in patients. In addition, the patients' disease severity (Eczema Area and Severity Index [EASI]) and quality of life (Dermatology Life Quality Index [DLQI]) were assessed. Itching occurred most frequently (74.69%) and with the greatest severity (62.66%) between 20:00 and 00:00, and the least number of patients (25.31%) experienced itching between 04:00 and 08:00. The DLQI and EASI scores both correlated with the average and maximum itch intensity (r = 0.582, r = 0.533, respectively; r = 0.539, r = 0.517, respectively; p < 0.001). The DLQI and EASI scores were associated with average itch intensity (B = 0.179, B = 0.204, respectively; 95% CI: 0.112 to 0.246, 95% CI: 0.096 to 0.313, respectively; p < 0.001), and the EASI score was associated with males and family history (B = 0.285, B = 0.287, respectively; 95% CI: 0.094 to 0.476, 95% CI: 0.096 to 0.478, respectively; p = 0.003). Adult patients with atopic dermatitis exhibited a circadian rhythm of itching; these study results could positively impact treatment approaches.

Bullous pemphigoid (BP) is the most common autoimmune subepidermal blistering disorder. Typically, patients will present with tense bullae and intense generalized pruritus with a skin biopsy demonstrating subepidermal split with eosinophils and a direct immunofluorescence highlighting autoantibodies against the basement membrane zone. Prognosis varies, and treatment involves an assessment of the severity of disease to determine whether to initiate topical or systemic immunosuppressive agents. We present an atypical presentation of BP that presented as a 3-to-4-week duration of pruritic small vesicular lesions in the upper chest, scabbed circular lesions along the upper extremity and pinnas of bilateral ear. Initially thought to be herpes zoster infection initially treated with valacyclovir for a week following a prior concern of a concomitant superficial skin infection with cephalexin and prednisone. With no clinical improvement, tissue biopsy was performed that confirmed bullous pemphigoid and treatment with steroid taper, doxycycline, and triamcinolone acetonide 0.1% cream was started. The aim of this case report is to present an atypical presentation of BP and to highlight maintaining a high index of suspicion of BP in patients presenting with disseminated significantly pruritic lesions., (Copyright© South Dakota State Medical Association.)

Urticaria, also known as hives, is a common condition thought to affect up to 20% of individuals worldwide in their lifetime. This skin condition is characterized by the appearance of pruritic, erythematous papules or plaques with superficial swelling of the dermis. The major complaint is the symptom of pruritus. Angioedema, which involves a deeper swelling of dermal or mucosal tissues, may accompany urticaria. Urticaria can be classified by both time course of symptoms and the underlying etiology., Competing Interests: Disclosure E.T. Oliver: Grant Support: National Institutes of Health, United States (K23AI139394), Robert Meyerhoff Professorship Advisory Board/Consultant: Novartis, Regeneron/Sanofi. S.S. Saini: Grant Support: Novartis, Switzerland, Sanofi, France, Regeneron, United States, National Institutes of Health, United States, Allakos, Escient Advisory Board/Consultant: Allakos, Granular Therapeutics, Novartis, Aquestive, Regeneron, Escient, Evommune, Innate, Celltrion, Sanofi., (Copyright © 2024 Elsevier Inc. All rights reserved.)

Background: Chronic pruritus affecting primary non-lesional skin (CPNL) manifests as a common symptom across a spectrum of diseases spanning various medical specialties. Given the diverse etiological factors involved, diagnosing the underlying condition poses a significant challenge., Objectives: To provide a comprehensive overview of clinical, laboratory, and imaging diagnostics for CPNL., Materials and Methods: A thorough literature search on the diagnostics of chronic pruritus was conducted using PubMed with specific keywords "chronic pruritus AND non-lesional skin", "chronic itch AND non-lesional skin", "chronic pruritus AND diagnostics", "chronic itch AND diagnostics", "CKD-aP", "hepatic pruritus", "cholestatic pruritus", and "myeloproliferative neoplasms AND pruritus"., Results: A systematic diagnostic approach is recommended for patients with CPNL, guided by the prevalence of pruritus-associated diseases. Initial basic diagnostics facilitate a cost-effective and focused evaluation during the initial medical assessment. Information pertaining to underlying diseases can be further refined through specialized diagnostic procedures., Conclusions: CPNL often presents a diagnostic dilemma. Adopting a stepwise diagnostic strategy facilitates the identification of underlying etiologies, which is crucial for recognizing diseases and administering pruritus-specific pharmacotherapy., (© 2024. The Author(s).)

Importance: Prurigo nodularis (PN) is a debilitating skin disease characterized by the hallmark symptom of chronic itch; the intensity of itch in PN was assessed using the Worst Itch Numeric Rating Scale (WI-NRS) to evaluate the primary efficacy end point of 2 recent phase 3 studies of dupilumab treatment for PN., Objective: To validate the psychometric properties and to determine the clinically meaningful improvement threshold for WI-NRS in patients with moderate to severe PN., Design, Setting, and Participants: In this secondary analysis of the PRIME and PRIME2 trials, content validity of WI-NRS was assessed through in-depth patient interviews. Psychometric assessments used pooled data from masked, intention-to-treat (ITT) patients with PN from randomized, double-masked, and placebo-controlled studies. Psychometric assessments included test-retest reliability, construct validity, known-groups validity, and sensitivity to change in adult patients with moderate-to-severe PN. Thresholds for meaningful within-patient improvement in the WI-NRS score were determined using anchor and distribution-based approaches. Data were analyzed after completion of each study, December 2019 to November 2021 for PRIME and January 2020 to August 2021 for PRIME2., Exposures: Dupilumab (300 mg) or placebo subcutaneously every 2 weeks for 24 weeks., Main Outcomes and Measures: WI-NRS score at specified time points up to 24 weeks after randomization., Results: A total of 20 patients were included across the 2 studies (mean [SD] age, 49.3 [17.2] years; 11 female [55%]); 311 patients were included in the pooled intention-to-treat analysis (mean [SD] age, 49.5 [16.1] years; 203 female [65.3%]). The WI-NRS questions (20 of 20 patients), recall period (19 of 20 patients), and response scale (20 of 20 patients) were easy to understand and relevant for patients with PN. Adequate test-retest reliability was observed between screening and baseline (intraclass correlation coefficient = 0.72, using Patient Global Impression of Severity [PGIS] to define stable patients). Convergent and discriminant validity was supported by moderate to strong correlations (absolute r range = 0.34-0.73) with other conceptually related measures and weaker correlations (absolute r range = 0.06-0.32) with less-related measures, respectively. WI-NRS was sensitive to change, as demonstrated by differences in change from baseline among groups (per PGIS change and PGI of Change [PGIC]). Using anchor-based approach with PGIS and PGIC, the clinically meaningful improvement threshold was 4 points (range, 3.0-4.5), which was also supported by distribution-based methods., Conclusion and Relevance: This study found that WI-NRS may be a fit-for-purpose instrument to support efficacy end points measuring the intensity of itching in adults with PN., Trial Registration: NCT04183335 (PRIME) and NCT04202679 (PRIME2).

Chronic itch is a frequent and debilitating condition that greatly affects the quality of life of those affected. In a subset of patients, damage to the peripheral or central nervous system constitutes the cause of the itch. Small-fiber neuropathy, nerve compression syndromes, post-herpetic neuralgia, scars and burns are possible conditions affecting the peripheral nervous system potentially causing itch, whereas space-occupying lesions affecting the spinal cord and stroke are examples of conditions that may induce central itch. Neuropathic itch starts on normal appearing skin, is often accompanied by pain sensations and other dysesthesias, and usually relieved by local cold application. Its distribution depends on the affected site of the somatosensory system. A comprehensive medical history is paramount to reach the diagnosis, while complementary diagnostics with skin biopsies for the investigation of cutaneous neuromorphological alterations or medical imaging to rule out nerve impingement may be advised in selected cases. Topical agents such as capsaicin or local anesthetics as well as systemic drugs such as gabapentinoids, antidepressants and opioid receptor modulators are used in the treatment of neuropathic itch. This review article provides an overview of the clinical features, underlying causes, diagnostic workup and therapeutic approach in neuropathic itch., (© 2024. The Author(s), under exclusive licence to Springer Medizin Verlag GmbH, ein Teil von Springer Nature.)

The skin manifestations of neurofibromatosis 1 significantly reduce health-related quality-of-life. However, data on the utility of existing surveys in capturing neurofibromatosis 1 skin treatment outcomes are lacking. This quantitative study examined the relationship between clinician-rated severity and visibility and patient-rated itch and quality-of-life (QoL) to (1) establish baseline levels of skin- and condition-specific-related QoL, itch, depression and anxiety; (2) identify patient concerns to inform the development and evaluation of skin interventions; and (3) compare the sensitivity of different QoL measures. Validated scales included Skindex-29, Dermatology Life Quality Index (DLQI), Neurofibromatosis 1-adult quality-of-life (NF1-AdQOL) questionnaire, and the Hospital Anxiety and Depression Scale (HADS). We recruited 100 participants (response rate: 95%). Of these, 42% reported itch and 23% had probable clinical anxiety. Our cohort had higher levels of anxiety and total HADS scores compared to a control population. Using multivariate regression analysis, increasing visibility significantly predicted poorer QoL using the Skindex-29, NF1-AdQOL, and DLQI (p < 0.05); and itch significantly predicted worse QoL in Skindex-29 and NF1-AdQOL (p < 0.05). The highest mean scoring questions in Skindex-29 and NF1-AdQOL concerned worry about worsening skin disease and embarrassment. The highest mean scoring questions in DLQI were regarding itch, pain, and embarrassment. Items asking specifically about cutaneous neurofibromas (cNF) scored higher than comparable skin-specific questions (t-test p value <0.05). In summary, this study provides insights into the factors contributing to impaired QoL, anxiety, and mood in NF1 patients with cutaneous neurofibromas. Key factors identified for use in cNF measures include visibility, itch, anxiety, embarrassment, fears of worsening skin disease, and cNF-specific questions., (© 2024 The Author(s). The Journal of Dermatology published by John Wiley & Sons Australia, Ltd on behalf of Japanese Dermatological Association.)

Patients with moderate-to-severe atopic dermatitis (AD) experience intense chronic itch and impaired sleep. Reports from parents and teachers suggest that AD patients may also have attention problems. However, attention has not yet been directly assessed in AD patients. We utilized an objective, computer-based continuous performance test (CPT) validated for use in attention-deficit/hyperactivity disorder (ADHD) diagnosis to formally evaluate attention in adolescent AD subjects. This was a single-visit, cross-sectional, non-interventional study of moderate-to-severe (Investigator's Global Assessment [IGA] ≥ 3) AD subjects aged 12-17 years without clinician-diagnosed ADHD. Attention was evaluated using two performance-based measures: Conners, CPT-3 and the Stroop Color and Word Test. The primary parameter was CPT-3 detectability (d') measure. Lesional severity measures included Eczema Area and Severity Index (EASI) and body surface area (BSA) involvement. Subjects completed self-report rating scales assessing sensory responsiveness patterns (Adult/Adolescent Sensory Profile [AASP]), itch (Peak Pruritus Numerical Rating Scale [PP-NRS]), skin pain, quality of life, sleep, anxiety, and depressive symptoms. A total of 44 subjects were included in the study (61.4% female; mean age 15.0 [SD 1.78] years; mean EASI 20.4 [SD 7.8]; mean PP-NRS 7.0 [SD 1.8]). Results indicated substantial disease impact on sleep, quality of life, and comorbid anxiety and depressive symptoms. The mean (SD) Conners, CPT-3 d' T-score was 48.7 (SD 10.7), similar to the expected mean from a randomly selected age/gender-matched sample of the general population (50 [SD 10], by definition). Overall, 13.6% of subjects exhibited a d' T-score ≥ 60 (clinically significant poor performance), which was not greater than the expected general population value (15.9%). Subject-level data review by two psychologists determined that only 2 subjects demonstrated an overall response pattern that clearly indicated attention deficit. Many subjects had atypical sensory responsiveness profiles: sensory hypersensitivity (38.6%), sensory avoidance (50%), and low registration (hypo-sensitivity, 36.4%). Adolescents with moderate-to-severe AD without existing ADHD diagnosis did not demonstrate greater attention problems on performance-based measures than would be expected in age/gender-matched peers.Trial registration NCT05203380., (© 2024. The Author(s).)

Background: Sleep loss is a key factor contributing to disease burden in people with atopic dermatitis (AD). Mitigating itch to improve sleep is an important outcome of AD treatment. This study explored the content validity and measurement properties of the Sleep-Loss Scale, a single-item rating scale for assessing itch interference with sleep in clinical trials of AD treatments., Methods: Concept elicitation and cognitive debriefing interviews were conducted with 21 adults and adolescents (12-17 years of age) with moderate-to-severe AD to develop a conceptual model of patient experience in AD and explore the content validity of the scale. Data collected from adults with moderate-to-severe AD enrolled in a phase 2b study (NCT03443024) were used to assess Sleep-Loss Scale's psychometric performance, including reliability, construct validity, and ability to detect change. Meaningful within-patient change (MWPC) thresholds were also determined using anchor-based methods., Results: Qualitative findings from concept elicitation highlighted the importance of sleep-loss related to itch in AD. Debriefing analysis of the Sleep-Loss Scale indicated that the scale was relevant, appropriate, and interpreted as intended. Trial data supported good reliability, construct validity and ability to detect improvement. MWPC was defined as a 1-point improvement using trial data, a finding supported by qualitative data., Conclusions: The Sleep-Loss Scale provides a valid and reliable patient-reported measure of the impact of itch on sleep in patients with AD, and can detect change, indicating it is fit-for-purpose to evaluate the efficacy of AD treatments in moderate-to-severe patients., (© 2024. The Author(s).)

Competing Interests: Conflicts of interest G.Y. has been a consultant and board member for Sanofi, Regeneron, Pfizer, Galderma, Novartis, Eli Lilly, AbbVie, Kiniksa, Pierre Gabre, LEO Pharma, Escient, Celldex Therapeutics, Vifor and GSK; and has received research support from Pfizer, Sanofi, Regeneron, LEO Pharma, Eli Lilly, Kiniksa, Novartis, Escient, Galderma and Celldex Therapeutics.

Background: Chronic pruritus is a clinically heterogeneous symptom that manifests itself with varying duration, intensity, or quality. To date, there is no validated German-language instrument that systematically assesses the relevant parameters. With the support of the Pruritus Research Working Group (Arbeitsgemeinschaft Pruritusforschung, AGP), a questionnaire for the assessment of chronic pruritus (AGP questionnaire) was developed in 2008. The subsequently revised instrument, now called the German Pruritus Questionnaire, records pruritus-specific parameters such as localization, course, intensity and quality, anamnestic data on the general state of health, sociodemographic data, quality of life, and coping methods. It is to be validated in the study presented here., Patients and Methods: The questionnaire was used in 366 patients with chronic pruritus of different etiologies from Germany (University Hospitals Heidelberg, Münster, Mainz, Erlangen, Giessen, private practice Bad Bentheim, TU Munich, Wiesbaden Kidney Center), Austria (Graz University Hospital) and Switzerland (Aarau Cantonal Hospital)., Results: The reliability for repeated completion (retest reliability) with regard to localization, first occurrence, and concomitant diseases showed high values for Cohen's kappa (> 0.8). The data on the retest reliability of the pruritus characteristics showed lower values (< 0.7). With regard to the measurability of practically relevant changes (change sensitivity), medium to strong effect sizes were found (0.09-0.19). A statistically significant differentiation of the pruritus etiologies based on the recorded parameters was not possible., Conclusions: The German Pruritus Questionnaire allows a comprehensive and structured recording of patient- and clinician-reported, relevant dimensions of chronic pruritus of different etiologies. Further adaptation and development are planned., (© 2024 The Author(s). Journal der Deutschen Dermatologischen Gesellschaft published by John Wiley & Sons Ltd on behalf of Deutsche Dermatologische Gesellschaft.)

Background: A multitude of factors may influence fatigue in psoriasis and psoriatic arthritis (PsA); however, their individual fatigue components have not been thoroughly examined., Objectives: To explore characteristics of fatigue and its potential drivers in a cohort of patients with psoriasis with or without PsA., Methods: Adults with psoriasis and a nonpsoriasis control group completed the Multidimensional Fatigue Inventory-20 questionnaire. Patients with psoriasis also reported joint pain intensity, pruritus, skin pain, and sleep problems using a numerical rating scale. Linear regression models were applied to continuous outcomes, and beta coefficients (β) for the slopes were estimated with 95% confidence intervals (CIs)., Results: Among 2741 adults with psoriasis (of which 593 also had PsA) and 3788 controls, the impact on total fatigue was greatest for PsA (β = 5.22; 95% CI, 3.55-6.90), followed by psoriasis (β = 2.10; 95% CI, 0.96-3.25), compared with the general population (P trend < .0001). Among patients with psoriasis with or without PsA, increasing joint pain intensity was associated with overall fatigue (β = 2.23 [95% CI, 2.03-2.44] for each 1-point increase in joint pain numerical rating scale score)., Limitations: We lacked information on the effect of pharmacotherapy., Conclusions: These findings highlight the importance of a symptom-based approach when treating psoriasis, rather than focusing on objective severity measures alone., Competing Interests: Conflicts of interest Dr Thomsen has been a consultant and/or been on advisory boards for AbbVie, Almirall, Celgene, Eli Lilly, Janssen Pharmaceuticals, LEO Pharma, Novartis, Pfizer, Roche, Sanofi, and Union Therapeutics; been a speaker for AbbVie, Eli Lilly, LEO Pharma, Novartis, Sanofi, and UCB Pharma; and received research support from AbbVie, LEO Pharma, Janssen Pharmaceuticals, Novartis, Sanofi, and UCB Pharma. Dr Thyssen is an advisor for AbbVie, Almirall, Arena Pharmaceuticals, Coloplast, OM Pharma, Aslan Pharmaceuticals, Union Therapeutics, Eli Lilly & Co, LEO Pharma, Pfizer, Regeneron, and Sanofi-Genzyme; is a speaker for AbbVie, Almirall, Eli Lilly & Co, LEO Pharma, Pfizer, Regeneron, and Sanofi-Genzyme; and has received research grants from Pfizer, Regeneron, and Sanofi-Genzyme. Dr Egeberg has received research funding from Pfizer, Eli Lilly, the Danish National Psoriasis Foundation, and the Royal Hofbundtmager Aage Bang Foundation and honoraria as consultant and/or speaker from AbbVie, Almirall, Bristol-Myers Squibb, LEO Pharma, Samsung Bioepis Co, Ltd, Pfizer, Eli Lilly, Novartis, UCB, Union Therapeutics, Horizon Therapeutics, Galderma, and Janssen Pharmaceuticals. Dr Egeberg is an employee at LEO Pharma. Dr Kristensen has received fees for speaking and consultancy from Pfizer, AbbVie, Amgen, Forward Pharma, UCB, Gilead, Biogen, BMS, MSD, Novartis, Eli Lilly, and Janssen Pharmaceuticals. Author Nymand has no conflict of interest to declare., (Copyright © 2024 American Academy of Dermatology, Inc. Published by Elsevier Inc. All rights reserved.)

Purpose: Pruritus is an unpleasant sensation that creates the urge to scratch. In many chronic conditions, relentless pruritus and scratching perpetuates a vicious itch-scratch cycle. Uncontrolled itch can detrimentally affect quality of life and may lead to sleep disturbance, impaired concentration, financial burden, and psychological suffering. Recent strides have been made to develop guidelines and investigate new therapies to treat some of the most common severely pruritic conditions, however, a large group of diseases remains underrecognized and undertreated. The purpose of this article is to provide a comprehensive review of the challenges hindering the treatment of pruritus., Methods: An online search was performed using PubMed, Web of Science, Google Scholar, and ClinicalTrials.gov from 1994 to 2024. Included studies were summarized and assessed for quality and relevance in treating pruritus., Results: Several barriers to treating pruritus emerged, including variable presentation, objective measurement of itch, and identifying therapeutic targets. Itch associated with autoimmune conditions, connective tissue diseases, genodermatoses, cutaneous T-cell lymphoma, and pruritus of unknown origin were among the etiologies with the greatest unmet needs., Conclusion: Treating pruritus poses many challenges and there are many itchy conditions that have no yet been addressed. There is an urgent need for large-scale controlled studies to investigate potential targets for these conditions and novel therapies.

Itch is a common symptom of dermatologic diseases associated with significant impairment of health-related quality of life (QoL). This study reveals disparities in itch symptom experience and itch impact on QoL. A retrospective study of patient-reported outcome measure (PRO) data (ItchyQoL, Itch NRS, Pain Interference, Anxiety) for 387 outpatient dermatology visits to characterize the impact of itch on patients' QoL and itch symptom experience based on skin color in patients with dermatologic disease. Most patients were Caucasian females (67%) with mean age of 48 years. Correlative analyses showed mild itch associated with emotional impacts on QoL (p < 0.01), while severe itch associated with functional and emotional impacts on QoL (p < 0.01). African American (AA) patients reported more "severe-range" answers for 15 (68%) ItchyQoL items and had higher ItchyQoL mean scores (p = 0.001). ItchyQoL demonstrated an emotional impact on QoL by mild itch, but a functional and emotional impact on QoL by severe itch. Further, AAs suffered from greater itch-related impairment in QoL than Caucasian patients, especially due to scarring and sleeplessness., (© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)

Nocturnal scratching substantially impairs the quality of life in individuals with skin conditions such as atopic dermatitis (AD). Current clinical measurements of scratch rely on patient-reported outcomes (PROs) on itch over the last 24 h. Such measurements lack objectivity and sensitivity. Digital health technologies (DHTs), such as wearable sensors, have been widely used to capture behaviors in clinical and real-world settings. In this work, we develop and validate a machine learning algorithm using wrist-wearing actigraphy that could objectively quantify nocturnal scratching events, therefore facilitating accurate assessment of disease progression, treatment effectiveness, and overall quality of life in AD patients. A total of seven subjects were enrolled in a study to generate data overnight in an inpatient setting. Several machine learning models were developed, and their performance was compared. Results demonstrated that the best-performing model achieved the F1 score of 0.45 on the test set, accompanied by a precision of 0.44 and a recall of 0.46. Upon satisfactory performance with an expanded subject pool, our automatic scratch detection algorithm holds the potential for objectively assessing sleep quality and disease state in AD patients. This advancement promises to inform and refine therapeutic strategies for individuals with AD.

Background: Atopic dermatitis is a chronic inflammatory disease characterized by increased itch, skin pain, poor sleep quality, and other symptoms that negatively affect patient quality of life. Upadacitinib, an oral selective Janus kinase (JAK) inhibitor with greater inhibitory potency for JAK1 than JAK2, JAK3, or tyrosine kinase 2, is approved to treat moderate-to-severe atopic dermatitis., Objective: We aimed to evaluate the effect of upadacitinib on patient-reported outcomes over 52 weeks in adults and adolescents with moderate-to-severe atopic dermatitis., Methods: Data from two phase III monotherapy trials of upadacitinib (Measure Up 1, NCT03569293; Measure Up 2, NCT03607422) were integrated. Changes in pruritus, pain, other skin symptoms, sleep, quality of life, mental health, and patient impression were evaluated. Patient-reported outcome assessments included the Worst Pruritus Numerical Rating Scale, Patient-Oriented Eczema Measure, Dermatology Life Quality Index, Atopic Dermatitis Symptom Scale, Atopic Dermatitis Impact Scale, Hospital Anxiety and Depression Scale, SCORing Atopic Dermatitis index, Patient Global Impression of Severity, Patient Global Impression of Change, and Patient Global Impression of Treatment. Minimal clinically important differences, achievement of scores representing minimal disease burden, and the change from baseline were evaluated in patients who received upadacitinib through week 52 and in patients who received placebo through week 16., Results: This analysis included 1609 patients (upadacitinib 15 mg, N = 557; upadacitinib 30 mg, N = 567; placebo, N = 485). Baseline demographics and disease characteristics were generally similar across all arms. The proportion of patients treated with upadacitinib reporting improvements in itch increased rapidly by week 1, increased steadily through week 8, and was sustained through week 52. Patients receiving upadacitinib also experienced improvements in pain and other skin symptoms by week 1, which continued through week 16; improvements were maintained through week 52. Patient reports of improved sleep increased rapidly from baseline to week 1, increased steadily through week 32, and were sustained through week 52. Patients experienced quality-of-life improvements through week 8, which were maintained through week 52. By week 1, patients in both upadacitinib groups experienced rapid improvements in emotional state, and by week 12, patients also achieved meaningful improvements in anxiety and depression. Improvements in mental health continued steadily through week 32 and were maintained through week 52. Patients treated with upadacitinib 30 mg generally experienced improvements in patient-reported outcomes earlier than those treated with upadacitinib 15 mg. Through week 16, patients receiving upadacitinib experienced greater improvements versus those receiving placebo in all assessed patient-reported outcomes., Conclusions: Adults and adolescents with moderate-to-severe atopic dermatitis treated with once-daily upadacitinib 15 or 30 mg experienced early improvements in itch, pain, other skin symptoms, sleep, quality of life, and mental health that were sustained through week 52., Clinical Trial Registration: ClinicalTrials.gov identifiers NCT03569293 (13 August 2018) and NCT03607422 (27 July 2018)., (© 2024. The Author(s).)

Atopic dermatitis is a cutaneous inflammatory disease characterized by intense pruritus, which is often underestimated despite its direct impact on patients' health-related quality of life and the high burden it poses. The authors' goal was to design a qualitative tool to guide patients and healthcare professionals in their assessment and interpretation of pruritus intensity using a numerical rating scale. The draft of this tool, henceforth "guideline", was developed based on a systematic literature review and focus groups comprising patients and a scientific committee. This draft was validated with an independent group of patients and the final version was designed following their feedback. According to the results of the systematic review, pruritus impacts 6 health-related quality of life domains: sleep quality; emotional status; overall health-related quality of life; physical function; social/sexual activity; productivity, particularly affecting sleep quality and the emotional domain. Patients considered that physical function was the most strongly affected domain, followed by sleep quality and emotional well-being, establishing that a minimum pruritus intensity of 4 and 7 points impacts moderately and severely, respectively, on the different domains of patients' health- related quality of life. The guideline may help patients and healthcare professionals to interpret and assess pruritus intensity using a numerical rating scale and to understand the impact of pruritus on patients' health-related quality of life.

Background: Pruritus, or itch, is a key symptom of atopic dermatitis (AD); as such, mitigating itch is an important outcome of AD treatment. This study explored the content validity and measurement properties of the Pruritus Numeric Rating Scale (Pruritus NRS), a novel single-item scale for assessing itch severity in clinical trials of AD treatments., Methods: In this mixed-methods study, qualitative interviews were conducted with 21 people with moderate-to-severe AD (n = 15 adult, n = 6 adolescent) to develop a conceptual model of the patient experience in AD and explore the content validity of the Pruritus NRS. Data collected daily from adults with moderate-to-severe AD enrolled in a phase 2b study (NCT03443024) were used to assess the Pruritus NRS' psychometric performance, including reliability, construct validity, and responsiveness. Meaningful within-patient change (MWPC) thresholds were also determined using anchor-based methods., Results: Qualitative findings highlighted the importance of itch in AD, including severity, persistence, frequency, and daily life interference. Patient debriefing of the Pruritus NRS indicated that the scale was relevant, appropriate, and interpreted as intended. Trial data supported overall good psychometric properties. MWPC was defined as a 3-point improvement in Pruritus NRS score, a finding supported by qualitative data., Conclusions: The Pruritus NRS provides a valid and reliable patient-reported measure of itching severity in patients with moderate-to-severe AD, and can detect change, indicating it is fit-for-purpose to evaluate the efficacy of AD treatments in this population., Trial Registration: ClinicalTrials.gov identifier, NCT03443024., (© 2024. The Author(s).)

Scalp psoriasis affects approximately 80% of patients with psoriasis and can negatively impact their quality of life. This post hoc analysis of the VOYAGE 2 Phase III randomized clinical trial evaluated scalp response to guselkumab treatment and its association with skin response and patient-reported outcomes. The study included patients with moderate-to-severe plaque psoriasis and baseline scalp psoriasis who were initially randomized to receive guselkumab. Patients were divided into 3 groups based on their achievement of a Psoriasis Area and Severity Index 90 response at week 28: responder continuation, non-responder continuation and responder withdrawal. In all 3 groups, mean Psoriasis Area and Severity Index head and scalp-specific Investigator's Global Assessment scores improved through week 28. In the responder withdrawal group, these scores worsened after treatment withdrawal at week 28, but remained stable through week 48 in both continuation groups. Trends in Dermatology Life Quality Index and Psoriasis Symptoms and Signs Diary itch scores mirrored those of mean scalp-specific Investigator's Global Assessment scores through week 48. Within-subject correlations were 0.83 between scalp-specific Investigator's Global Assessment and Psoriasis Area and Severity Index head scores and 0.78 between scalp-specific Investigator's Global Assessment and Psoriasis Symptoms and Signs Diary itch scores. Through week 252, Psoriasis Area and Severity Index head scores remained stable in the responder continuation group, improved in the non-responder continuation group and rapidly improved by week 84 in the responder withdrawal group after retreatment.

Mastocytosis is a group of disorders characterized by the pathologic accumulation of mast cells in various tissues. One example of mastocytosis is urticaria pigmentosa, which presents with mastocytomas that can cause hives and, when irritated, pruritus. To our knowledge, we are describing the first case of urticaria pigmentosa without pruritus. The patient had a positive Darier's sign, stated that they never felt itchy, and denied ever using a topical steroid or antihistamine. Although our patient declined additional testing, patients like this may benefit from a detailed evaluation of their sensory system through both quantitative sensory testing and genetic analysis. J Drugs Dermatol. 2024;23(3):&nbsp; &nbsp; &nbsp;doi:10.36849/JDD.7558e.

Background: The Patient-Oriented Eczema Measure (POEM) is the recommended core outcome instrument for atopic dermatitis (AD) symptoms. POEM is reported by recalling the presence/absence of seven symptoms in the last 7 days., Objective: To evaluate measurement errors in POEM recordings due to imperfect recall., Methods: Using data from a clinical trial of 247 AD patients aged 12-65 years, we analysed the reported POEM score (r-POEM) and the POEM derived from the corresponding daily scores for the same seven symptoms without weekly recall (d-POEM). We quantified recall error by comparing the r-POEM and d-POEM for 777 patient-weeks collected from 207 patients, and estimated two components of recall error: (1) recall bias due to systematic errors in measurements and (2) recall noise due to random errors in measurements, using a bespoke statistical model., Results: POEM scores have a relatively low recall bias, but a high recall noise. Recall bias was estimated at 1.2 points lower for the r-POEM on average than the d-POEM, with a recall noise of 5.7 points. For example, a patient with a recall-free POEM of 11 (moderate) could report their POEM score anywhere from 5 to 14 (with 95% probability) because of recall error. Model estimates suggested that patients tend to recall itch and dryness more often than experienced (positive bias of less than 1 day), but less often for the other symptoms (bleeding, cracking, flaking, oozing/weeping and sleep disturbance; negative bias ranging 1-4 days)., Conclusions: In this clinical trial data set, we found that patients tended to slightly underestimate their symptoms when reporting POEM, with significant variation in how well they were able to recall the frequency of their symptoms every time they reported POEM. A large recall noise should be taken into consideration when interpreting POEM scores., (© 2024 The Authors. Clinical & Experimental Allergy published by John Wiley & Sons Ltd.)

Patients living with HIV may experience a variety of inflammatory dermatoses, ranging from exacerbations of underlying conditions to those triggered by HIV infection itself. This article presents a current literature review on the etiology, diagnosis and management of atopic dermatitis, psoriasis, pityriasis rubra pilaris, lichen planus, seborrheic dermatitis, eosinophilic folliculitis, pruritic papular eruption and pruritus, in patients living with HIV., Competing Interests: Declaration of competing interest The authors declare no conflicts of interest., (Copyright © 2023 Elsevier Inc. All rights reserved.)

Chronic kidney disease-associated pruritus (CKD-aP) is a disabling symptom which is frequent and often underestimated. Pa-MRC has a negative impact on quality of life, and is frequently accompanied by sleep disorders and depression. The approval of difelikefalin – a kappa opioid receptor agonist – in this indication requires updated recommendations. As a first step, secondary causes of pruritus without skin lesions must be ruled out, and general measures taken (emollients, psychological support, optimization of dialysis, normalization of serum calcium, phosphate and PTH in the range proposed by the KGIDO guidelines, treatment of iron deficiency). A therapeutic test with a non-sedating oral antihistamine may be proposed. If this test is negative, Pa-MRC must be strongly suspected, and its intensity (WI-NRS scale) and impact on quality of life assessed. In the case of mild Pa-MRC (WI-NRS ≤ 3), only general measures are implemented. If Pa-MRC is moderate to severe (WI-NRS ≥ 4), specific treatment with difelikefaline can be initiated for 6 months in addition to general measures. At 3 months, if the response is complete (WI-NRS score ≤ 1) or partial (decline ≥ 3 points), treatment is continued. At 6 months, if the response is complete, treatment may be discontinued with the patient’s agreement; treatment is maintained if the response is partial. At 3 or 6 months, if response is insufficient (decline < 3 points) and/or in the event of intolerance, treatment is discontinued and an alternative treatment (e.g., gabapentinoids, UVB) may be considered after dermatological consultation.

In this study, we aimed to analyze the literature to date on the utilization of topical calcineurin inhibitors in the management of pruritus&nbsp;among older adults, ages 65 and older. The 16 studies included in the final analysis demonstrated that topical calcineurin inhibitors are well tolerated across ages and are effective in treating a wide variety of chronic pruritic conditions. Collectively, these findings support that topical calcineurin inhibitors should be considered a safe, plausible option for managing age-associated itch. J Drugs Dermatol. 2024;23(2): doi:10.36849/JDD.7190e.