What Is a Pilonidal Sinus, What Causes Them and What Are The Symptoms of Pilonidal Sinus?


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What is a pilonidal sinus?
Pilonidal means a ‘nest of hairs’.
A narrow tunnel (a small abnormal channel) in the body is what we call a sinus tract. It typically goes between a focus of infection in deeper tissues to the skin surface. This means that the tract may discharge pus from time to time on to the skin......