A pilonidal sinus disease is a kind of cyst or small abscess formation in the cleft of the buttocks. Both men and women are affected by this condition.

Men may develop this disease at the age of 21, while women usually develop pilonidal sinus disease at the age of 19. It is less common in adults over 45 and children. The etiological factor for this disease is still unknown.

However, there are some factors which increase the risks of developing this disease such as, hair growth, hormonal changes (since it appears after puberty), spending too much time in sedentary position, wearing tight clothes which causes friction.

This condition does not manifest any noticeable symptoms. If it develops infection there will be swelling, pain and redness in the affected place.

In this case, it also causes blood and ooze pus which have really strong and foul odor. If you suspect you may have this disease, you have to visit a doctor immediately since the infection may get worse and cause serious problems and consequences if it is not treated medically.

Symptoms of PNS

At the very beginning there are not any noticeable and warning symptoms except for small dimples on the skin surface.

If the dimples become infected they will easily develop abscess too. Abscess is swollen and inflamed tissue which contains pus or cyst. These are the symptoms of infection:

• Cyst swelling
• Sore and red skin around the affected skin area
• Hair protruding from the skin lesion
• Pus and blood draining with a foul odor
• Formation of several sinus tracts
• Severe pain when standing and sitting

Treatment of PNS

The treatment depends on the severity of this condition

Conservative Treatment

If there is no inflammation or severe pain, an antibiotic which may treat wide range of bacteria will be prescribed.

This is not the healing treatment though, it may only relieve the symptoms of infection and discomfort. It is also recommendable to make necessary examinations, remove the hair from the lesion regularly and pay attention to your hygiene.


To undergo this procedure, your doctor will give you a local anesthetic and open the abscess to remove the blood, pus and hair.

Then, the wound will be covered with sterile dressing to protect it from secondary infections and to promote the healing process. Additional treatment is not needed since the wound heals usually within 4 weeks.


The surgical procedure is needed if there is a recurring PNS or if there are more sinus tracts developed. The patient will be given a local anesthetic and the procedure encompasses opening the lesion and removing the pus and the debris.

After the surgery the wound will be covered with suitable dressing which the patient is supposed to change on a regular basis according to the doctor’s instructions.

The doctor will also tell the patients about the recovery time and how to protect the wound from infections.