A case of acne fulminans successfully treated with cyclosporin a and prednisolone.

Acne fulminans (AF) is a rare condition and the most severe form of acne. It is characterized by the sudden onset of painful and ulcerative pustules and systemic symptoms including high fever and polyarthralgia. Response to ordinary antibiotic agents is poor, and the treatment most often recommended is systemic corticosteroids. We report here a case of a young Japanese man with acne fulminans presenting with severe pustules and pyoderma gangrenosum (PG)-like ulcerations.