Hidradenitis suppurativa.

Hidradenitis suppurativa is a chronic, relapsing, inflammatory disease process that primarily involves the axilla and/or inguinal region and does not manifest itself until after puberty. Typically, the process begins as a local occlusive disease of a sweat gland; secondary bacterial infection then occurs. The early stages of hidradenitis suppurativa are usually managed by the dermatologist. Once the disease becomes extensive and chronic, surgical excision of all the involved tissue is indicated.