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Coronavirus disease 2019 (COVID-19) is an infectious disease, caused by severe acute respiratory syndrome (SARS)-CoV-2, that broke out in December 2019. In just 4 months it has spread to almost every country in the world and up to April 18, 2020, the virus has infected more than two million people. Itch is the most common symptom in dermatology and a frequent one of systemic diseases. The association of itch and viral diseases has been widely documented; however, the actual prevalence of itch in the patients suffering from new the SARS-CoV-2 infection is still unknown. In this paper, we present a review of the available literature on the topic of itch in the affected population. Moreover, we have also analyzed different aspects of itch associated with COVID-19 pandemic, not directly related to the viral infection. Those included use of chemicals, hand sanitizers, common use of personal protective equipment and psychosocial stress., (© 2020 Wiley Periodicals LLC.)

Background: Quality of life (QoL) and sleep, which are essential for well-being in the mental, physical, and socioeconomic domains, are impaired in psoriatic patients. However, the exact role of the clinical subtype of psoriasis in this aspect remains poorly studied. Objectives: The aim of this study was to investigate differences in QoL impairment and sleeping problems in patients suffering from various clinical subtypes of psoriasis and to evaluate the effects of pruritus on QoL. Methods: This cross-sectional, multicenter study included 295 eligible subjects with diagnosed psoriasis. Each patient was examined with the use of the same questionnaire. Measures included predominant subtype of psoriasis, disease severity, pruritus scores, patients' health-related QoL and the incidence of sleep disturbance. Results: The QoL of most patients was decreased irrespectively of clinical psoriasis subtype, however, the most impaired QoL was in patients with erythrodermic psoriasis. The majority of patients reported sleep disturbances caused by pruritus, albeit there was no relevant differences between analyzed subgroups in this aspect of patients' well-being. Pruritus was an important factor determining QoL and sleeping problems in the studied population. Conclusions: Identifying the most disturbing area of life and recognizing the most bothersome subjective symptoms of psoriasis are pivotal to focusing on the most relevant treatment goal and achieving therapeutic success. [ABSTRACT FROM AUTHOR]

Introduction: Diabetes mellitus is associated with several skin manifestations, however the association with itch remains unclear. Aim: To present a detailed literature review in order to analyse the frequency, pathogenesis, and course of itch in diabetes mellitus. Material and methods: Data were collected from the PubMed and Cochrane databases. Articles were excluded if the populations presented with comorbidities or received treatment with drugs affecting the skin. Also, animal studies, studies with poor methodology and pilot studies were excluded. Results: Among the 5 original articles included, the epidemiology of itch in diabetes varies from 18.4% to 27.5%. Two main factors are associated with the pathogenesis of itch in diabetes, namely skin xerosis and diabetic polyneuropathy. It is still poorly defined how glycaemic control is associated with generalized itch. No treatment of choice is available; however, topical therapy (emollients) provides significant relief in varying percentages of patients. Conclusions: The results indicate a benefit of diabetes screening in individuals presenting with chronic itch without primary skin lesions. [ABSTRACT FROM AUTHOR]

Simple Summary: Although it is well accepted that itch might be one of the symptoms related to diabetes mellitus, very little is known about this topic from previous studies. In the current study, we aimed to investigate itch sensation in type 2 diabetes mellitus with special emphasis on the potential underlying causes. According to our study, itch was a relatively frequent symptom, present in about 36% of subjects, causing significant impairment to quality of life. Based on our findings and previous literature data, it seems that the primary cause of itch in this group of subjects is poor diabetes control with subsequent skin dryness and diabetic polyneuropathy. Background: Despite growing interest in itch, data regarding itch in type 2 diabetes mellitus (DM2) are still limited, and mostly based on outdated studies. This study aimed to evaluate the clinical characteristics of itch in the adult population with DM2 and explore potential underlying causes. Methods: The study group consisted of 109 adult patients with DM2. Standardized questionnaires were completed in order to assess the itch intensity [Numerical Rating Scale (three days, 24hours) (NRS)] and the Four-item Itch Questionnaire (4IIQ) and to assess the psychological impact of itch [ItchyQoL, Six-Item Stigmatization Scale (6-ISS), Hospital Anxiety and Depression Scale (HADS)]. Skin dryness was evaluated clinically and by non-invasive assessment of epidermis moisturizing. Neuropathy was assessed using the clinical Katzenwadel neuropathy scale. Results: Itch occurred in 35.8% of adult patients with DM2, with NRSmax three days 6.31 ± 2.16 and 8.1 ± 3.5 points in 4IIQ. Itchy patients have had significantly higher FPG levels compared with the non-itchy population (p = 0.01). Patients with itch had a significantly higher possibility of neuropathy compared with non-itchy subjects (p < 0.01). Skin xerosis was significantly more advanced in patients with itch compared to those without (p < 0.01). The mean ItchyQol score was assessed as 41.2 ± 13.4 points, indicating mild life quality impairment and correlated positively with itch intensity. Itchy subjects had significantly higher scores in both anxiety and depression dimensions of HADS (in each p < 0.01). Conclusions: We suggest that the primary cause of itch is prolonged poor diabetes control with altered glucose and insulin levels, subsequently causing skin dryness and neuropathy in long-lasting DM2. [ABSTRACT FROM AUTHOR]

Psoriasis is a chronic, inflammatory skin disease present in about 3% of the world's population. The clinical symptoms manifest diversely, therefore one can distinguish several subtypes of psoriasis. The majority of patients with psoriasis experience pruritus, which is an unpleasant sensation that decreases patients' quality of life. The knowledge on pruritus in different subtypes of psoriasis is limited. We have performed a cross-sectional, prospective, and multicenter study to evaluate the relationship between clinical subtypes of psoriasis (large-plaque, nummular, guttate, palmoplantar, inverse, erythrodermic, palmoplantar pustular, generalized pustular psoriasis, and psoriasis of the scalp) and the prevalence, intensity, and clinical manifestation of itch. We introduced a questionnaire assessing various aspects of pruritus to a total of 254 patients. Out of these, 42 were excluded. Pruritus was present in 92.9% of the remaining patients and its prevalence did not depend on the clinical subtype. A correlation between the severity of psoriasis and the intensity of itch was explicitly noticeable in palmoplantar pustular psoriasis and scalp psoriasis (p < 0.05). The itch sensation was individual and differed among subtypes of psoriasis. In conclusion, pruritus is a frequent phenomenon, and its presentation is different in various subtypes of psoriasis. [ABSTRACT FROM AUTHOR]

In common knowledge, basal cell carcinoma (BCC) is known to be asymptomatic, but in clinical practice, at least some patients complain of itching. The present study group comprised of 180 patients with histologically confirmed BCC. Detailed information on demographics, clinical history, and physical findings was recorded. Moreover, various clinical features of itch (including intensity, localization, quality, descriptors) and the most common factors responsible for its aggravation or alleviation were examined. The itch was present in 21.1% of patients with BCC and was limited to the tumor. The mean intensity of the itch was 3.1 ± 1.2 points (Numerical Rating Scale), indicating moderate itch intensity. Among the patients, 22.4% reported that itching occurred constantly, every day. BCC-associated itch seems to be moderately frequent, although being a seemingly underestimated problem among patients with BCC. [ABSTRACT FROM AUTHOR]