Updated S2 K guidelines for the management of bullous pemphigoid initiated by the European Academy of Dermatology and Venereology (EADV).

BACKGROUND Bullous pemphigoid (BP) is the most common autoimmune subepidermal blistering disease of the skin and mucous membranes. This disease typically affects the elderly and presents with itch and localized or, most frequently, generalized bullous lesions. A subset of patients only develops excoriations, prurigo-like lesions, and eczematous and/or urticarial erythematous lesions. The disease, which is significantly associated with neurological disorders, has high morbidity and severely impacts the quality of life. OBJECTIVES AND METHODOLOGY The Autoimmune blistering diseases Task Force of the European Academy of Dermatology and Venereology sought to update the guidelines for the management of BP based on new clinical information, and new evidence on diagnostic tools and interventions. The recommendations are either evidence-based or rely on expert opinion. The degree of consent among all task force members was included. RESULTS Treatment depends on the severity of BP and patients' comorbidities. High-potency topical corticosteroids are recommended as the mainstay of treatment whenever possible. Oral prednisone at a dose of 0.5 mg/kg/day is a recommended alternative. In case of contraindications or resistance to corticosteroids, immunosuppressive therapies, such as methotrexate, azathioprine, mycophenolate mofetil or mycophenolate acid, may be recommended. The use of doxycycline and dapsone is controversial. They may be recommended, in particular, in patients with contraindications to oral corticosteroids. B-cell-depleting therapy and intravenous immunoglobulins may be considered in treatment-resistant cases. Omalizumab and dupilumab have recently shown promising results. The final version of the guideline was consented to by several patient organizations. CONCLUSIONS The guidelines for the management of BP were updated. They summarize evidence- and expert-based recommendations useful in clinical practice

Chilblain-like lesions (COVID-19 toes) have the same impact on family members than psoriasis systemically treated: insights from a case-control study targeting the pediatric population

OBJECTIVE: COVID-19 toes represent the main dermatological COVID-19 cutaneous manifestation in pediatric patients. Its diagnosis exposes the whole family to social stigma and this aspect was not previously evaluated. PATIENTS AND METHODS: This was a multicenter, case-control, observational study that compared the family impact of COVID-19 toes vs. psoriasis (PsO). We enrolled 46 pediatric patients (23 with psoriasis and 23 with COVID-19 toes, age and gender matched) and their parents/caregivers that had to fill the Dermatitis Family Impact (DFI) questionnaire. RESULTS: DFI index did not differ significantly between both subgroups (p=0.48), and in psoriatic patients did not correlate with both Psoriasis Area Severity Index (PASI) (p=0.59) and itch-VAS (p=0.16). CONCLUSIONS: COVID-19 toes, a transitory dermatosis, exerted a similar impact/perturbation on family dynamics than PsO, a well-known stigmatizing, chronic inflammatory dermatosis

Emerging treatment options for the management of pemphigus vulgaris

Khalaf Kridin Department of Dermatology, Rambam Health Care Campus, Haifa, Israel Abstract: Pemphigus vulgaris (PV) is a life-threatening disease belonging to the pemphigus group of autoimmune intra-epidermal bullous diseases of the skin and mucosae. The therapeutic management of PV remains challenging and, in some cases, conventional therapy is not adequate to induce clinical remission. The cornerstone of PV treatment remains systemic corticosteroids. Although very effective, long-term corticosteroid administration is characterized by substantial adverse effects. Corticosteroid-sparing adjuvant therapies have been employed in the treatment of PV, aiming to reduce the necessary cumulative dose of corticosteroids. Specifically, immunosuppressive agents such as azathioprine and mycophenolate mofetil are widely used in PV. More recently, high-dose intravenous immunoglobulins, immunoadsorption, and rituximab have been established as additional successful therapeutic options. This review covers both conventional and emerging therapies in PV. In addition, it sheds light on potential future treatment strategies for this disease. Keywords: azathioprine, meycophenolate mofetil, rituximab, intravenous immunoglobulins, immunoadsporption, emergin

Isotretinoin and the risk of psychiatric disturbances - A global study shedding new light on a debatable story

Supplementary Table 1- Definition of study participantsSupplementary Table 2- Definition of study participants in the sensitivity analysisTHIS DATASET IS ARCHIVED AT DANS/EASY, BUT NOT ACCESSIBLE HERE. TO VIEW A LIST OF FILES AND ACCESS THE FILES IN THIS DATASET CLICK ON THE DOI-LINK ABOV

Is Gout Associated with Pyoderma Gangrenosum? A Population-Based Case-Control Study

The coexistence of pyoderma gangrenosum (PG) and gout has been reported in individual patients; however, the association between these conditions has not been investigated. We aimed to assess the association between PG and gout and to examine whether the presence of gout predisposes to the development of PG. A population-based case-control study was conducted comparing PG patients (n = 302) with age-, sex-, and ethnicity-matched control subjects (n = 1497) with respect to the presence of preceding gout. Logistic regression models were utilized for univariate and multivariate analyses. The prevalence of preceding gout was greater in patients with PG than in control subjects (3.7% vs. 0.7%, respectively; p < 0.001). Gout was associated with a more than fivefold increase in the risk of PG (OR, 5.15; 95% CI, 2.21-11.98). After adjusting for confounding factors, gout emerged as a significant independent predictor of PG (adjusted OR, 4.08; 95% CI, 1.69-9.80). Gout preceded the diagnosis of PG by a median latency of 4.6 years. Patients with gout-associated PG were older, predominantly male, and had a higher prevalence of metabolic syndrome than other patients with PG. In conclusion, gout increases the risk of developing PG by more than fivefold. Physicians managing patients with gout and PG should be aware of this emerging association

Rheumatoid arthritis and pyoderma gangrenosum: a population-based case-control study

Background: The association between pyoderma gangrenosum (PG) and rheumatoid arthritis (RA) was not investigated in the setting of controlled studies. The risk of PG among patients with RA is not established. Objective: The study aims to evaluate the magnitude of the association between RA and the subsequent development of PG. Additionally, we aimed to characterize patients with RA-associated PG relative to other patients with PG. Methods: A population-based case-control study was conducted comparing PG patients (n = 302) with age-, sex-, and ethnicity-matched control subjects (n = 1497) with respect to the presence of RA. Logistic regression models were utilized for univariate and multivariate analyses. Results: The prevalence of RA was greater in patients with PG than in control subjects (4.7% vs. 1.5%, respectively; P < 0.001). More than threefold increase in the odds of PG with RA (OR, 3.29; 95% CI, 1.66\u20136.50) was noted. This association retained its statistical significance following a sensitivity analysis excluding RA cases diagnosed up to 2 years prior to PG (OR, 2.72; 95% CI, 1.25\u20135.91) and after adjusting for confounding factors (adjusted OR, 2.80; 95% CI, 1.23\u20135.86). RA preceded the diagnosis of PG in the majority of patients by a mean (SD) latency of 9.2 (7.4) years. Patients with RA-associated PG were older relative to the remaining patients with PG (62.2 [15.0] vs. 53.4 [20.9] years, respectively; P = 0.006). Conclusions: RA increases the odds of developing PG by more than threefold. Physicians managing patients with RA should be aware of this increased burden. Patients with RA may be advised to avoid additional precipitating factors of PG.Key Points\u2022 The odds of developing PG are increased by more than threefold in patients with RA.\u2022 PG followed the diagnosis of RA in the majority of patients with these coexistent conditions by an average latency of 9.2 years.\u2022 Patients with RA-associated were older relative to other patients with PG at the onset of PG

Increased Risk of Pemphigus among Patients with Psoriasis: A Large-scale Cohort Study

Although pemphigus has recently been linked to psoriasis, the risk of emergence of pemphigus during the course of psoriasis is yet to be delineated. The aim of this study was to evaluate the risk of developing pemphigus during the course of psoriasis. A large-scale population-based longitudinal retrospective cohort study was performed to assess the hazard ratio (HR) of pemphigus among 68,836 patients with psoriasis relative to 68,836 age-, sex-, and ethnicity-matched controls. The incidence of pemphigus was 0.14 (95% confidence interval (95% CI) 0.10-0.19) and 0.04 (95% CI 0.02-0.07) per 1,000 person-years among psoriatic patients and controls, respectively. Patients with psoriasis were more than 3 times as likely to develop pemphigus (HR 3.25; 95% CI 1.70-6.21). The increased risk remained statistically significant following adjustment for several confounders (adjusted HR 3.19; 95% CI 1.67-6.11). To conclude, psoriasis is associated with an elevated risk of pemphigus. Further research is needed to explore the immunoserological profile of patients with a dual diagnosis