No symptoms when not infected. Fever and chills. Discharge of pus. A pilonidal cyst is a minor abnormality that occurs during fetal development. Infection is usually caused by staphylococcal bacteria.
Obesity increases perspiration.
Hot tub baths seem more effective in preventing infection of the cyst. Encourage your child to wear light, loose-fitting clothing. Help your child avoid becoming overweight. Medical history and physical exam by a doctor. Laboratory culture of the discharge.