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[Verneuil's disease in the differential diagnosis of suppuration of the ano-perineo-buttock region].

Verneuil's disease or hidradenitis suppurativa is not frequent. Nevertheless since VERNEUIL's classic description in 1854, many cases have been reported. It is a disease of the apocrine sweat glands, that may arise on each of their localizations: axilla, breast areolae, umbilicus, perineum, groin, buttocks. The chronic suppurative disease of these glands give rise to multiple fistulous constantly infected tracts. The typical appearance usually allows a clinical diagnosis. Other disease may nevertheless look like hidradenitis suppurativa. We present two cases and discuss the differential diagnosis between the hidradenitis suppurativa and the chronic infection of a pilonidal cyst.