Non-pharmacologic approaches for hidradenitis suppurativa - a systematic review.

Importance: Hidradenitis suppurativa (HS) is a chronic inflammatory skin condition presenting with painful nodules and sinus tracts primarily in intertriginous regions. The persistent nature of HS and challenges in symptom management lead many patients to seek non-pharmacologic approaches due to the paucity and limited efficacy of conventional HS therapeutic options.Objective: To evaluate the existing evidence for non-pharmacologic modalities in treatment of HS.Findings: Discussed in this review are non-pharmacologic modalities with evidence of efficacy in HS treatment, including weight loss, vitamin B12, vitamin D and zinc supplementation, and dietary avoidance of brewer's yeast. Limitations of the available data on non-pharmacologic therapies in HS include the predominance of pilot and single-armed studies, as well as heterogeneity in study design, subject disease severity, concomitant treatment and comorbid conditions.Conclusions and relevance: HS patients are becoming increasingly interested in the use of non-pharmacologic approaches to augment conventional treatments. Strength of evidence for non-pharmacologic therapies in HS is limited by small study size and lack of randomized controlled trials. Future large-scale investigations should be pursued to better establish efficacy and dosing regimens for the use of non-pharmacologic treatments in HS.

Rosacea associated with dupilumab therapy.

Background: Dupilumab is used for treatment of atopic dermatitis through blockade of IL-4 and IL-13 signaling of the Th2 pathway. Recent case reports have described alopecia, psoriasis, persistent facial dermatitis, and recall dermatitis at patch test sites after the initiation of dupilumab therapy.Case report: We describe the case of a 67-year-old female with atopic dermatitis who developed recurrent episodic flares of rosacea temporally associated with dupilumab injections that resolved after dupilumab discontinuation.Conclusion: The cause of rosacea-like reaction associated with dupilumab treatment is unknown. Th2 pathway inhibition by dupilumab may promote Demodex proliferation and increased IL-17-mediated inflammation implicated in the pathophysiology of rosacea.Abbreviations: atopic dermatitis: AD; interleukin: IL; persistent facial dermatitis: PFD; T-helper cell type 1: Th1; T-helper cell type 2: Th2; T-helper cell type 17: Th17; tumor necrosis factor-∝: TNF-∝.

Widespread pustular eruption following probiotic use.

A 26-year-old woman with Crohn disease and palmoplantar psoriasis on ustekinumab presented with a diffuse and intensely pruritic rash with a few pin-point pustules within days after initiation of an over-the-counter Align brand probiotic. Biopsy revealed psoriasiform and spongiotic dermatitis with spongiform subcorneal pustules and scattered eosinophils, consistent with acute generalized exanthematous pustulosis. Our case highlights a unique presentation of acute generalized exanthematous pustulosis following probiotic exposure with fewer than usual pustular lesions. IL23 suppression by ustekinumab may have contributed to the patient's reduced pustular presentation.

Erythrodermic Darier disease associated with metastatic lung adenocarcinoma.

We present a patient with erythrodermic Darier disease occurring in temporal association with diagnosis of metastatic lung adenocarcinoma. The patient presented with eroded and crusted keratotic papules and plaques over greater than 90% body surface area with extensive secondary impetiginization. Given a longstanding history of pruritic eruption, this presentation represents a paraneoplastic flare of an underlying genodermatosis. Near total resolution was achieved with chemotherapy and topical corticosteroids.

A Practical Approach to Recalcitrant Face and Neck Dermatitis in Atopic Dermatitis.

Face and neck dermatitis in the atopic dermatitis patient is a diagnostically challenging entity with broad differential diagnoses. Recent case reports reporting face and neck dermatitis in patients on dupilumab therapy have added further complexity to diagnosis and management. Herein, we discuss a broad diagnostic algorithm and practical management strategy for recalcitrant face and neck dermatitis in the atopic patient with an emphasis on face and neck dermatitis associated with dupilumab therapy. Our aim is to raise awareness about the probable entity of drug-associated face and neck dermatitis and share a practical management strategy that may also be applied broadly to atopic dermatitis patients presenting with face and neck dermatitis.

Topical probiotics: the unknowns behind their rising popularity.

OBJECTIVE: Topical probiotics have been used for skin care and treatment since the early 20th century. Over the past decade, there has been a dramatic surge of commercially-available topical probiotic products. We conducted a systematic search of clinical data relating to the use of topical probiotics and identified relevant clinical and regulatory gaps. METHODS: PubMed and Google Scholar searches were conducted for trials and reviews of probiotics. FDA definitions of cosmetics, drugs, and regulation of topical probiotics were reviewed. RESULTS: Topical probiotics have shown efficacy in a number of limited trials, particularly those involving the treatment of acne, atopic dermatitis, and rosacea. However, there is a paucity of literature on the safety profiles, mechanistic action, and therapeutic potential of topical probiotic products. Several regulatory gaps exist, including approval and classification of topical probiotic products by the FDA; currently there are no topical probiotic products the FDA has approved as drugs. CONCLUSION: With increasing popularity among the general public, but insufficient clinical data to demonstrate large-scale effectiveness and a thorough understanding of side effects, there is a need for further mechanistic and clinical investigation, as well as improved regulation and standardization of topical probiotic products.