Abstract:Idiopathic palmoplantar hidradenitis is a new entity consisting of plantar or palmoplantar painful erythematous nodules which affect children in good health. The histopathologic study shows a neutrophilic hidradenitis. We report on 3 new cases of idiopathic plantar hidradenitis and review the literature.
“…IPH presents as an eruption of urticaria-like erythematous papules, plaques, and occasionally nodules. It is usually provoked by physical activity, wet footwear, and friction, and is self-limited, resolving within days to weeks [ 133 ]. Fig.…”
Purpose of Review Neutrophilic dermatoses are defined by the presence of a sterile neutrophilic infiltrate on histopathology. This review focuses on the pathogenesis, epidemiology, clinicopathological features, diagnosis, and management of four disorders: Sweet syndrome, pyoderma gangrenosum, Behçet syndrome, and neutrophilic eccrine hidradenitis.Recent Findings Recent studies have provided insight into the complex pathogenesis of neutrophilic dermatoses. Evidence supports an intricate interplay of abnormal neutrophil function and inflammasome activation, malignant transformation into dermal infiltrating neutrophils, and genetic predisposition. Summary Neutrophilic dermatoses have diverse cutaneous and extracutaneous manifestations and may be associated with significant morbidity and mortality. Common underlying associations include infectious, inflammatory, and neoplastic disorders, as well as drug reactions. Emerging diagnostic and therapeutic frameworks identify an expanding role for biologic and targeted anti-inflammatory therapies.
KeywordsAcute febrile neutrophilic dermatosis • Behçet disease • Neutrophilic dermatosis • Neutrophilic eccrine hidradenitis • Pyoderma gangrenosum • Sweet syndrome This article is part of the Topical Collection on Hospital-Based Dermatology
“…IPH presents as an eruption of urticaria-like erythematous papules, plaques, and occasionally nodules. It is usually provoked by physical activity, wet footwear, and friction, and is self-limited, resolving within days to weeks [ 133 ]. Fig.…”
Purpose of Review Neutrophilic dermatoses are defined by the presence of a sterile neutrophilic infiltrate on histopathology. This review focuses on the pathogenesis, epidemiology, clinicopathological features, diagnosis, and management of four disorders: Sweet syndrome, pyoderma gangrenosum, Behçet syndrome, and neutrophilic eccrine hidradenitis.Recent Findings Recent studies have provided insight into the complex pathogenesis of neutrophilic dermatoses. Evidence supports an intricate interplay of abnormal neutrophil function and inflammasome activation, malignant transformation into dermal infiltrating neutrophils, and genetic predisposition. Summary Neutrophilic dermatoses have diverse cutaneous and extracutaneous manifestations and may be associated with significant morbidity and mortality. Common underlying associations include infectious, inflammatory, and neoplastic disorders, as well as drug reactions. Emerging diagnostic and therapeutic frameworks identify an expanding role for biologic and targeted anti-inflammatory therapies.
KeywordsAcute febrile neutrophilic dermatosis • Behçet disease • Neutrophilic dermatosis • Neutrophilic eccrine hidradenitis • Pyoderma gangrenosum • Sweet syndrome This article is part of the Topical Collection on Hospital-Based Dermatology
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