Pyoderma gangrenosum with unusual periodontal manifestations.

Pyoderma gangrenosum (PG) is a rare non infectious ulcerative dermatosis of uncertain aetiology, which is associated with systemic diseases in at least 50% of the patients. It is characterized by recurrent cutaneous ulcerations with mucopurulent or haemorrhagic exudates. The legs are most commonly affected but other parts of the skin and mucous membrane may also be involved. Oral involvement is very rare.  We herein present a case of periodontal manifestation of pyoderma gangrenosum in a young woman, which would be the first of its kind