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Health Library/Pilonidal Sinus: Causes, Symptoms, and Treatment Options

Pilonidal Sinus: Causes, Symptoms, and Treatment Options

July 19, 2026 · Town Hospital editorial team

Medically reviewed by the Medical Department at Town Hospital

Pilonidal Sinus: Causes, Symptoms, and Treatment Options
This content was written and reviewed by Town Hospital's medical editorial team - last updated 2026/07/19. It is for awareness and is not a substitute for medical consultation.

Pain or swelling over the tailbone (right at the base of the back) is a very common complaint among young adults, especially those with desk jobs or who spend long hours driving. This condition is called a pilonidal sinus, and it is more common than many people imagine - most who delay treatment do so out of embarrassment, not because it is rare.

Symptoms

  • Pain over the tailbone that increases with prolonged sitting
  • Redness or swelling in the area
  • Discharge, sometimes with an odor
  • Local warmth or discomfort when sitting or moving

Causes

It usually results from an ingrown hair or a buildup of skin debris under the skin over the tailbone, and the risk increases with:

  • Prolonged sitting (desk work, long car journeys)
  • Excess weight
  • Dense hair in the area
  • Poor personal hygiene in some cases

The condition is more common in young adults in their twenties and thirties, and occurs more often in men than women.

When to see a doctor

Consult a general surgeon if you feel:

  • Increasing or persistent pain over the tailbone
  • Swelling that grows over time
  • Discharge or bleeding
  • A general fever alongside the local pain (a sign of possible wider infection)

Delaying out of embarrassment often lets the condition recur and worsen, so early evaluation saves you pain, later complications, and a longer recovery.

Treatment options

  • Mild cases: may improve with good care, hygiene, and regular follow-up
  • Recurrent or inflamed cases: usually need a simple surgical procedure to drain the inflamed area and remove the cause at its root
  • Modern surgical techniques are much simpler and reduce recovery time compared with older methods

The final decision on the right treatment is made after a direct examination by the surgeon, according to severity and recurrence.

How Town Hospital helps you

The General Surgery department at Town Hospital offers a precise, confidential assessment and explains all available options - from simple care to surgical intervention if needed - with full follow-up until complete recovery. There is no need to delay out of embarrassment; our team handles every case with complete privacy and professionalism.

Frequently asked questions

Is a pilonidal sinus dangerous?

Usually not, but it can recur and cause repeated infections if treatment is delayed, so early evaluation matters.

Is surgery always necessary?

No - mild cases may improve with care and follow-up, but recurrent or inflamed cases usually need a simple procedure.

Who does this condition usually affect?

It is more common in young adults, especially those with desk jobs or who sit for long periods.

Is the recovery period after surgery long?

With modern techniques, recovery is much shorter than in the past, but it varies by patient and procedure.

How can I prevent recurrence?

Avoid continuous prolonged sitting without movement, maintain personal hygiene, and follow up any change in the area early.

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