Reactive neutrophilic dermatoses

Reactive neutrophilic dermatoses are a spectrum of conditions mediated by neutrophils, and typically associated with underlying diseases, such as inflammatory bowel disease and hematologic malignancy.

Conditions considered to be reactive neutrophilic dermatoses include:
 * Erythema nodosum
 * Marshall syndrome
 * Sweet syndrome (Acute febrile neutrophilic dermatosis)
 * Neutrophilic dermatosis of the dorsal hands (Pustular vasculitis of the dorsal hands)
 * Neutrophilic eccrine hidradenitis
 * Pyoderma gangrenosum
 * PAPA syndrome