Hidradenitis Suppurativa: Causes, Features, and Current Treatments.

Hidradenitis suppurativa (HS), a relatively common and chronic inflammatory skin disorder. HS can have debilitating consequences if not diagnosed and treated appropriately. Clinically defined by recurrent, inflamed nodules in intertriginous regions (i.e., axillary, inguinal, and perianal areas), HS can cause intense pain and, in severe disease stages, lead to the formation of fistulas, sinus tracts, and extensive scarring. Postpubertal onset and female preponderance further characterize HS. Numerous pathogenic mechanisms have been proposed in HS, including immune dysregulation, genetics, smoking, and obesity; however, the exact etiology remains to be elucidated. The association of HS with inflammatory bowel disease, cardiovascular disease risk factors, and psychiatric disorders suggests HS is a systemic disease. HS significantly impairs quality of life in patients in excess versus other skin diseases. Unfortunately, experiences indicate long diagnostic delays, which in many cases might be due to disease unawareness among physicians. Increased knowledge of HS is therefore important in order to optimize disease management and ultimately improve the quality of life of patients.