Pustular vasculitis and superficial bullous pyoderma gangrenosum in a patient with ulcerative colitis.

A patient who showed a disseminated pustular eruption compatible with pustular vasculitis and concomitant bullous lesions with the features of superficial bullous pyoderma gangrenosum during an exacerbation of ulcerative colitis is described. These clinical findings could be an expression of a common immunopathogenic mechanism of inflammatory bowel disease and the neutrophilic dermatoses. It is suggested that pustular vasculitis is another skin manifestation of ulcerative colitis.