Targeted dual biologic therapy for erythroderma of unknown etiology guided by high-parameter peripheral blood immunophenotyping.

Erythroderma is a severe and heterogeneous inflammatory skin condition with little guidance on the approach to management in cases of unknown etiology. To guide therapeutic selection, we sought to create an immunophenotyping platform able to identify aberrant cell populations and cytokines in subtypes of erythroderma. We performed high-parameter flow cytometry on peripheral blood mononuclear cells (PBMCs) and whole blood of a patient with refractory idiopathic erythroderma, erythrodermic patients with Sézary syndrome and pityriasis rubra pilaris, and healthy controls.

Plasma metabolomic profiling reveals a novel circulating biomarker signature in chronic pruritus of unknown origin.

Chronic pruritus of unknown origin (CPUO) is characterized by chronic itch for 6 weeks or greater without an identifiable primary cause. Studies are needed to investigate circulating blood biomarkers to elucidate disease pathogenesis. The objective of this study was to investigate changes in circulating blood metabolites in CPUO patients and to identify potential therapeutic targets.

Immune stimulus exposure as a trigger for the development of chronic pruritus and circulating blood type 2 inflammation.

Background: Chronic pruritus (CP) is a poorly characterized condition associated with intense pruritus without a primary skin eruption. This condition tends to emerge more commonly in older adults, and there is limited research on triggering factors.

Objective: To explore the clinical characteristics and pathophysiology of CP following exposure to an immune stimulus.

Efficacy and Safety of Abrocitinib in Prurigo Nodularis and Chronic Pruritus of Unknown Origin: A Nonrandomized Controlled Trial.

Importance: Prurigo nodularis (PN) and chronic pruritus of unknown origin (CPUO) are chronic pruritic diseases that dramatically impair quality of life, but therapeutic options are limited. Abrocitinib, a Janus kinase 1 inhibitor, represents a promising therapy for both conditions.

Objective: To assess the efficacy and safety of 200-mg oral abrocitinib administered once daily in adults with moderate to severe PN or CPUO.

Bronchiectatic Actinomycosis with Osseous Metaplasia Masquerading as Lung Cancer.

Bronchial involvement in pulmonary actinomycosis is rare and has been reported in the literature rarely. However, these reports describe endobronchial actinomycosis secondary to foreign body aspiration (for example, a fish bone). Our case did not have any history or clinical evidence suggesting foreign body aspiration, which makes it even more rare.

Comprehensive plasma cytokine and chemokine profiling in prurigo nodularis reveals endotypes in Type 2 inflammation.

Prurigo nodularis (PN) is a chronic inflammatory skin disease that is associated with variability in peripheral blood eosinophil levels and response to T-helper 2 targeted therapies (Th2). Our objective was to determine whether circulating immune profiles with respect to type 2 inflammation differ by race and peripheral blood eosinophil count. Plasma from 56 PN patients and 13 matched healthy controls was assayed for 54 inflammatory biomarkers.

Single-Cell RNA Sequencing Reveals Dysregulated POSTN+WNT5A+ Fibroblast Subclusters in Prurigo Nodularis.

Prurigo nodularis (PN) is an intensely pruritic, inflammatory skin disease with a poorly understood pathogenesis. We performed single-cell transcriptomic profiling of 28,695 lesional and nonlesional PN cells. Lesional PN has increased dysregulated fibroblasts (FBs) and myofibroblasts.

Longitudinal Course of Sleep Disturbance and Relationship With Itch in Adult Atopic Dermatitis in Clinical Practice.

Sleep disturbance (SD) is common in atopic dermatitis (AD). We examined the longitudinal course of SD and relationship with itch in AD patients. A prospective, dermatology practice-based study was performed (N = 1295) where patients were assessed at baseline and follow-up visits.

Nivolumab-Induced de novo Discoid Lupus Erythematosus.

An increasing number of checkpoint inhibitor-induced subacute cutaneous lupus erythematosus events have been reported. We present the first case of nivolumab-induced discoid lupus erythematosus in a patient with hepatocellular carcinoma. The patient presents with violaceous hypopigmented plaques on the pinna bilaterally, hypopigmented plaques with central hyperpigmentation on the posterior neck, and other hypopigmented plaques on the face, forearms, and hands.

Assessing Dermatology Provider Perceptions and Attitudes About the Unique Needs of Older Adult Patients.

Geriatric dermatology is an emerging field of dermatology, focused on the unique needs of older adults with dermatological diagnoses. Previous research identified important principles to consider in older adults with skin disease, including cognition, polypharmacy, mobility, social support and sleep disturbance.

Longitudinal Course of Sleep Disturbance and Relationship With Itch in Adult Atopic Dermatitis in Clinical Practice.

Background: Sleep disturbance (SD) is common in atopic dermatitis (AD). We examined the longitudinal course of SD and relationship with itch in AD patients.

Methods: A prospective, dermatology practice-based study was performed (N = 1295) where patients were assessed at baseline and follow-up visits.

Association of atopic dermatitis with delinquent behaviors in US children and adolescents.

Childhood atopic dermatitis (AD) is associated with chronic itch, pain and sleep disturbance, which may predispose children to high-risk behaviors in their school and home environments. We examined the association between AD and delinquent/high-risk behaviors in children and adolescents. Data were analyzed from The Fragile Families and Child Wellbeing Study, a longitudinal birth cohort study consisting of 4898 children born in urban cities between 1998 and 2000.