Pyoderma gangrenosum: An update.

Pyoderma gangrenosum (PG) is an uncommon, distinctive cutaneous ulceration which is usually idiopathic, but may be associated with many systemic disorders. The etipathogenesis of of PG is still not well understood. Clinically it is classified into ulcerative, pustular, bullous and vegetative types. A few atypical and rare variants have also been described. The diagnosis mainly depends on the recognition of evolving clinical features as investigations only assist in the diagnosis. In view of this a few criteria have been proposed for the diagnosis of PG. the treatment mainly consists of corticosteroids and immunosuppressive agents. A few new agents have also been tried in the management.