Advice after your nerve block for surgery
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What is a pilonidal sinus?
A pilonidal sinus is a small hole or tunnel in the skin at the bottom of the back, in the crease between the buttocks. Trapped hairs cause problems like leakage, abscess, and pain.
Laser treatment can help close the sinus and stop the problem from returning.
What is laser treatment?
Laser treatment is a simple surgical procedure. It is normally done under general anaesthetic as it is uncomfortable, but can be done under local if requested.
The tract is cleaned, and then a thin laser fibre is placed into the sinus opening. The laser light heats and destroys the inner lining of the sinus. The sinus then heals from the inside out.
The treatment usually takes less than 1 hour.
What are the benefits?
- It avoids large cuts to the skin
- There is less pain compared to bigger operations
- Faster healing
- You can usually go home the same day
- Less scarring
What happens after the procedure?
You can usually go home the same day. You will be given painkillers and antibiotics to go home with. You may feel some mild pain or soreness for a few days. You will notice some grey or blood-stained fluid leak from the area whilst it heals. This normally disappears over 2 weeks.
Most people can return to normal activities within a few days.
How do I care for myself afterwards?
- Keep the area clean and dry. Wash gently with water and pat dry.
- Avoid long sitting periods if it feels sore.
- Wear loose, comfortable clothing. If you get some leakage, wear an absorbent pad in your underwear.
- Do not put on dressings that stick to the wound – allow fluid to come out.
- Take pain relief if needed (paracetamol or ibuprofen)
- Once the wound has healed, consider laser hair removal in the area to reduce the risk of it coming back.
What are the risks?
Laser treatment is very safe. But as with all procedures, there are some risks:
- Infection of the wound
- Bleeding
- The sinus may come back and need further treatment
- Some patients may still need another type of surgery if the laser does not fully work
When should I seek help?
Call your GP or the hospital if you notice: high temperature (fever), severe pain not helped by pain medicine, lots of bleeding, or bad-smelling pus or swelling that is getting worse
Summary
Laser treatment for pilonidal sinus is a modern, less painful option than traditional surgery. Most people recover quickly and can get back to normal life within days.
If you have any questions, please speak to your doctor or nurse. They are here to help you.
Contact us
If you have any queries relating to this information, please contact the General surgery service.
About this information
Service:
General surgery
Reference:
Y/060
Approval date:
9 January 2025
Review date:
9 January 2028
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Important note
This page provides general information only. It is developed by clinical staff and is reviewed regularly every 3 years for accuracy. For personal advice about your health, or if you have any concerns, please speak to your doctor.