Pilonidal sinus (commonly known as ingrown hair disease) is a health condition that usually develops in the coccyx (tailbone) area. If left untreated, it can become chronic and significantly reduce quality of life. Although there is plenty of information available online, many patients still struggle to find clear and reliable answers to their questions.
In this article, we answer the 10 most frequently asked questions about pilonidal sinus, based on scientific and up-to-date medical knowledge.
1. What causes pilonidal sinus?
Pilonidal sinus develops when shed hairs penetrate the skin due to friction and pressure, triggering a foreign body reaction under the skin. The moist and enclosed structure of the coccyx area makes this condition more likely.
Main causes include:
- Prolonged sitting
- Excess weight (obesity)
- Thick and coarse hair structure
- Poor hygiene
- Genetic predisposition
- Tight, non-breathable clothing
2. Who is more likely to develop pilonidal sinus?
Pilonidal sinus is most commonly seen in men aged 15–35 and is 3–4 times more frequent in men than in women.
People at higher risk include those who sit for long periods (drivers, office workers), overweight individuals, and people with excessive body hair.
3. What are the symptoms of pilonidal sinus?
In the early stages, pilonidal sinus may go unnoticed. However, when infection develops, the following symptoms may occur:
- Tailbone pain that worsens when sitting
- Swelling between the buttocks
- Foul-smelling discharge that may be bloody or purulent
- Redness and tenderness
- Fever, fatigue, and rarely nausea
If these symptoms appear, a general surgery specialist should be consulted immediately.
4. Can pilonidal sinus heal on its own?
Pilonidal sinus does not heal spontaneously. Even if an abscess drains on its own, the underlying problem remains. In fact, the infection may spread and become chronic. Definitive treatment is usually surgical.
5. How is pilonidal sinus surgery performed?
There is no single standard surgical method for pilonidal sinus. The choice of treatment depends on the stage of the disease and the patient’s individual characteristics.
Commonly used methods include:
- Abscess drainage (in acute cases)
- Open wound technique (secondary healing)
- Primary closure
- Flap surgeries (Limberg, Karydakis, etc.)
- Microsinusectomy
- Endoscopic pilonidal sinus treatment (EPSiT)
- Laser-assisted treatments
The main goals are to completely remove all sinus tracts, protect the midline, and reduce the risk of recurrence.
6. Is pilonidal sinus surgery difficult?
Pilonidal sinus surgery is generally not a technically difficult procedure and is performed under local, spinal, or general anesthesia. Thanks to modern and minimally invasive techniques, most patients can return to daily activities in a short time.
7. What is the recovery process like after pilonidal sinus surgery?
Recovery time varies depending on the surgical method used:
- Minimally invasive techniques: 7–10 days
- Open wound healing: 1–2 months
During recovery, the following are essential:
- Regular wound dressing
- Proper wound hygiene
- Avoiding prolonged sitting
- Hair removal in the affected area
8. Can pilonidal sinus recur?
Yes. Pilonidal sinus is a condition with a risk of recurrence. Recurrence rates generally range between 10% and 30%.
However, with the correct surgical technique, appropriate patient selection, and proper postoperative care, this risk can be significantly reduced.
9. Why does pilonidal sinus recur?
The main causes of recurrence include:
- Incomplete removal of sinus tracts during surgery
- Inadequate wound care
- Reaccumulation of hair in the area
- Excess weight
- Prolonged sitting
- Genetic predisposition
People with a deep natal cleft (intergluteal groove) have a higher risk of recurrence.
10. How can pilonidal sinus recurrence be prevented?
To prevent recurrence, the following measures are recommended:
- Keeping the area clean and dry
- Regular hair removal (preferably laser hair removal)
- Weight control
- Avoiding prolonged sitting
- Strictly following postoperative medical advice
- Choosing flap or laser-assisted techniques when necessary
Pilonidal sinus may seem like a minor condition, but when neglected, it can lead to serious complications. Early diagnosis, appropriate treatment, and healthy lifestyle changes significantly improve treatment success and minimize the risk of recurrence.
