What are the symptoms of pilonidal cysts?

None: Patients with pilonidal cysts may not have any symptoms at all. In others the cyst may become infected resulting in inflammation and pain. The infected cyst may grow and rupture into the surrounding tissue, forming an abscess. Infected pilonodal cysts/abscesses can cause severe pain, redness, swelling, and warmth of the skin of the tailbone area. Abscesses may cause fever and drainage of pus.

Sometimes none: Some may have no symptoms unless infected. When it's infected, a pilonidal cyst becomes an abcess. Signs and symptoms of an infected pilonidal cyst may include: Pain,Reddening of the skin,Drainage of pus or blood from the skin and Foul smell from draining pus.