About the topic
A pilonidal sinus is a small opening or tunnel in the skin between the buttocks, near the tailbone. It may cause no trouble until it becomes infected. Infection can quickly cause swelling, pain and a collection of pus that makes sitting difficult.
Practical care & comfort
- Keep the area clean with regular bathing or showering.
- Do not shave the affected area unless your clinician advises it.
- After treatment, follow your team's dressing, wound-care and activity instructions closely.
Symptoms & signs
- A small opening at the top of the buttock cleft.
- Pain or swelling that can make sitting difficult.
- Blood or pus leaking from the area suggests infection.
When to speak with a clinician: A confirmed sinus without infection may only need observation. Discuss repeated infections or ongoing discharge with a surgeon; treatment depends on the symptoms and whether the problem keeps returning.
Food & nutrition
Diet does not drain an abscess or treat infection. Follow any wound-care and nutrition advice from your surgical team.
Foods & nutrition to follow
- Keep meals balanced with vegetables, staples and protein foods.
- After surgery, fibre and suitable fluids can make passing stool easier.
Foods to limit or avoid
- Limit frequent sugary snacks and drinks for general health.
- No food group must be excluded solely because of a pilonidal sinus.
About this guide
General adult health information; it does not diagnose your symptoms or replace individual medical advice. Follow any plan your treating team has given you.
Further reading from the clinical sources used for this guide: