Pyoderma gangrenosum (PG) is a cutaneous ulcerative condition that can present in various forms, including ulcerative, bullous, pustular, vegetative, and peristomal. It often occurs and recurs in areas subjected to trauma due to the pathergy phenomenon, where irritation or injury triggers flare-ups. The condition typically begins as a painful erythematous lesion that rapidly progresses to a necrotic or blistering ulcer.
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February 2025