A Case of Bullous Rheumatoid Neutrophilic Dermatosis

Abstract

A 77-year-old man presented with tense blisters on both legs and petechiae on his toe. He had a 14 year history of rheumatoid arthritis resistant to systemic steroids and bucillamine. The histopathological findings revealed a dense, dermal, mainly neutrophilic infiltrate without any features of vasculitis. Treatment with 75 mg/day dapsone was enough to improve his eruptions. Bullous rheumatoid neutrophilic dermatosis (RND) is one type of RND that often needs to be ruled out from bullous pemphigoid. Most cases of bullous RND have been reported in Japan. Thus, it is suspected that bullous RND may have a genetic component.