Pilonidal disease is a chronic infection of a cyst (pilonidal cyst)
that develops near the top of the crease between the buttocks. When the
infected cyst—also called a pilonidal abscess—in the skin does not heal, it is
called pilonidal disease.
The cause of a pilonidal cyst is not clear. It may be caused by a
hair follicle in the skin that becomes blocked and then infected. Continued
exercise or walking can pull hair into the infected cyst, forming an abscess.
Treatment may include draining the cyst and sometimes
having surgery to remove the cyst if it does not clear up on its own.
Anne C. Poinier, MD - Internal Medicine & C. Dale Mercer, MD, FRCSC, FACS - General Surgery
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