Recurrent Genital Herpes Triggering Ulcerative Pyoderma Gangrenosum.

Pyoderma gangrenosum (PG) is a neutrophilic dermatosis that presents as painful, rapidly growing skin ulcers with undermined edges and a violaceous, ragged border at the periphery and is non-responsive to conventional treatments. The average onset age is in the fourth decade, with a female preponderance. Genital PG is uncommon and may present singly or coexist with common sexually transmitted genital ulcerative diseases, which causes delays in the diagnosis and treatment of genital PG, thereby adding to the morbidity.