Pyoderma gangrenosum of the hand.

Pyoderma gangrenosum is a rare, painful, ulcerative neutrophilic dermatosis that is not usually seen on the hands. Pyoderma gangrenosum is a diagnosis of exclusion, as there are no specific laboratory or histopathologic findings to confirm the diagnosis. Heightened awareness and early recognition are needed to decrease morbidity in these patients.