Search

This article discusses a rare case of allergic contact dermatitis caused by a UV filter called bis-ethylhexyloxyphenol methoxyphenyl triazine, also known as Tinosorb S, which is commonly found in sunscreens. The case involves a 37-year-old woman who experienced a rash and itching after applying two different sunscreens containing Tinosorb S. Patch tests confirmed the woman's allergy to the specific ingredient provided by one of the sunscreen manufacturers. The article highlights the increasing use of Tinosorb S in sunscreens and the importance of patch testing all cosmetics to identify potential allergens. [Extracted from the article]

This article discusses a case of allergic contact dermatitis to octyl and butylcyanoacrylate, as well as formaldehyde, in Leukosan surgical glue. Allergic reactions to cyanoacrylates in surgical glue have been documented, but this case also highlights the presence of hidden allergens in Leukosan glue. The article emphasizes the importance of patch testing with specific cyanoacrylates and mentions the potential allergenic risks associated with formaldehyde and quaternium-15. The authors suggest that improved diagnostics and safer adhesive formulations are necessary to enhance patient safety in surgical practices. [Extracted from the article]

Background and Objectives: The repeated open application test (ROAT) is an adjuvant investigation measure to patch testing in the diagnosis of allergic contact dermatitis. ESCD recommends a 15 days duration but its overall duration varies according to publications and patients hardly adhere to prolonged ROAT duration beyond 1 week. Materials and Methods: The Dermatology and Allergy Group of the French Society of Dermatology performed a prospective study with the aim of determining the best duration for the ROAT. Results: A total of 328 ROAT results were collected for topical products, including cosmetics (60%) and topical medications (31.1%). Fifty‐nine (18%) ROATs were positive, and 16 (5%) were doubtful. All the positive ROATs occurred within 10 days, with a median time to positivity of 3 days. Conclusion: According to our results, a minimum duration of 10 days is necessary to achieve a positive ROAT to a topical product. [ABSTRACT FROM AUTHOR]

This article discusses the emergence of doxycycline-induced fixed drug eruption (FDE), a common adverse reaction characterized by red patches on the skin or mucosa. FDE is typically associated with drugs like paracetamol, antibiotics, and non-steroidal anti-inflammatory drugs. However, recent cases have shown that doxycycline, commonly used for post-exposure prophylaxis (PeP) against sexually transmitted infections (STIs), can also induce FDE. The article presents 15 cases of doxycycline-induced FDE, with most cases occurring within the past 6 months. The authors recommend in situ repeated open application tests (ROAT) to confirm the diagnosis and avoid oral provocation tests (OPT), which can carry risks. They also suggest that all cyclin antibiotics, including doxycycline, be contraindicated for safety reasons. The article emphasizes the importance of recognizing doxycycline-induced FDE, particularly in cases of genital lesions that could be misdiagnosed as STIs. [Extracted from the article]

The article focuses on the gadolinium-based contrast agents (GBCA) around the rate of hypersensitivity reaction (HS). It discusses the aim of evaluating the skin tests and intravenous provocation test (IPT), how skin prick tests (PTs) were performed and then intradermal tests were performed if negative.

Cutaneous squamous cell carcinoma (cSSC) is one of the most common skin cancers and can lead to patient death. Early detection of node metastasis is a major goal for dermatologists and oncologists. The procedure sentinel lymph node biopsy has been proposed to improve early detection of node metastasis. The aim of this study was to evaluate the efficacy and impact of this technique on the prognosis of cSSC. A total of 37 patients (Saint Louis Hospital, Paris, France) who had undergone sentinel lymph node biopsy and 290 cases from the literature were analysed. The mean rate of positive sentinel lymph node biopsy was 0.14 [95% CI 0.09-0.22]. However, relapse-free survival and overall survival were not affected by sentinel lymph node status (log-rank test; p = 0.08 and p = 0.31, respectively), suggesting that this procedure is not mandatory in the management of cSSC. [ABSTRACT FROM AUTHOR]

Background Objectives Methods Results Conclusions Clinical trials and real‐life data have reported an increased incidence of conjunctivitis in patients treated with dupilumab for their atopic dermatitis (AD). Although mostly mild in severity, in some cases conjunctivitis will appear or increase after dupilumab initiation, which can lead to dupilumab discontinuation.(1) To describe the characteristics of patients developing conjunctivitis requiring discontinuation of dupilumab; and (2) to analyse the factors associated with a complete conjunctivitis improvement after dupilumab discontinuation and a switch to tralokinumab or Janus kinase inhibitors.This was a multicentre retrospective cohort study that included all patients with AD treated with dupilumab who developed conjunctivitis leading to dupilumab discontinuation and switching to tralokinumab or Janus kinase inhibitors in daily practice. Data on patients, their AD and conjunctivitis were analysed at the inclusion visit (corresponding to discontinuation of dupilumab and the institution of new AD treatment), at visit 2 (3–6 months after inclusion) and at visit 3 (corresponding to the last medical visit).After multivariate analysis, the only factors associated with a complete resolution of dupilumab‐associated conjunctivitis at visit 2 and/or visit 3 were conjunctivitis duration (OR 8.98, 95% CI 1.47–55) (p = 0.018), personal history of asthma (OR 10.66, 95% CI 1.82–62.63) (p = 0.009) and switching from dupilumab to Janus kinase inhibitors (OR 17.11, 95% CI 2.94–99.66) (p = 0.002).Although uncommon, severe dupilumab‐associated conjunctivitis is more frequent in daily life compared to its incidence in the dupilumab pivotal trials. In these cases, our study suggests that a rapid switch to another molecule, particularly a Janus kinase inhibitor, should be considered. [ABSTRACT FROM AUTHOR]

The article presents a study of 6 women and 4 men, with a mean age of 37.6 years to investigate the safety and efficacy of combined biotherapy comprising of omalizumab. It mentions that patients with chronic spontaneous urticaria (CSU) are at risk of autoimmune diseases such as Hashimoto's thyroiditis, and pernicious anemia; and also mentions combining omalizumab with biologic drugs of different mechanism of action, should not be associated with beneficial or detrimental interactions.

Introduction: Chronic inflammatory dermatoses (CIDs) can significantly affect patients' lives. The Observatory of Chronic Inflammatory Skin Diseases (OMCCI) cohort was initiated to quantify the impact and disease evolution of four CID over 4 years' follow-up; at least 1,000 patients per CID are planned to be enrolled. The objective of this study was to present baseline characteristics of patients included in the OMCCI cohort between December 2020 and September 2022., Methods: This French, prospective, multicenter registry included adult patients treated in daily practice for moderate-to-severe psoriasis (PS), atopic dermatitis (AD), hidradenitis suppurativa (HS), or chronic urticaria (CU) starting or modifying a systemic treatment. At the inclusion visit and then every 6 months during 4 years, patient-reported outcomes and data on these diseases and their treatments are recorded., Results: A total of 2,058 patients from 24 centers were included: 1,137 PS, 413 AD, 301 HS, and 207 CU. Of these, 1,950 patients started or changed systemic treatment, and 108 reduced the dose of existing systemic treatment. Disease impact was qualified as debilitating by 80.1% (PS), 90.5% (AD), 90.5% (HS), and 89.4% (CU), affecting daily, family, and professional life. According to the SF-12 Survey, the impact of all four diseases was borderline pathological for physical health and severe for mental health. At inclusion, 20.4% of patients were receiving a conventional systemic or biologic treatment. After the first visit, this percentage raised to 83.3%. During the 6 months preceding study inclusion, 17.7% (PS), 27.9% (AD), 43.1% (HS), and 43.6% (CU) of patients missed work due to their illness, and 26.3% of patients with HS had been admitted to hospital (vs. 8.1%, 5.8%, and 13% of patients with PS, AD, or CU, respectively)., Conclusion: These CIDs (especially HS) had a major impact on all aspects of patients' quality of life. The low baseline use of systemic drugs and the high burden of these CIDs suggest that these agents are underused. Long-term and dynamic evaluation of the changes brought by the initiation or optimization of these treatments on the evolution of patients' lives will be studied prospectively during the 4-year follow-up of the OMCCI., (© 2024 S. Karger AG, Basel.)

Competing Interests: A. Badaoui et E. Mahé déclarent n’avoir aucun lien d’intérêts.

Competing Interests: A. Badaoui et E. Mahé déclarent n’avoir aucun lien d’intérêts.