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  • Dermatology Clinics

Pinworms come out of the anus (bum) at night and lay their eggs on nearby skin. The worms may be seen with a flashlight as crawling threads around the bum after the child has been asleep for about an hour. 

Pinworms are common among preschool and school-age children. Usually, children with pinworms have no symptoms but may be very itchy around the bum and vagina.


Most people get infected by accidentally swallowing pinworm eggs. Anyone can get pinworms, but they are most common in school-aged children. They are usually spread like this:

  • a person with pinworms scratches the itchy area and gets eggs on the fingers and under the fingernails. Then the infection can be spread by touching someone else.
  • someone picks up pinworm eggs from an infected person’s clothes, pajamas, sheets, etc. These eggs can live for many weeks outside the body.


A doctor can do a simple test to check for pinworms

Pinworms can be treated with medicine. A child can get pinworms again by coming into contact with pinworm eggs. All caregivers and children may need to be treated to stop the spread of pinworms.

What to do at home

  • Watch your child for signs of pinworms, if another child has them.
  • Watch for scratching of the bum.
  • Talk to your doctor about treatment if your child has pinworms.
  • Make sure all household members wash their hands carefully after going to the toilet or changing diapers.
  • Make sure they also wash their hands before preparing or eating food.
  • Change underwear, nighties, pajamas and bed sheets often to get rid of any eggs.
  • Bathe your child in the morning to remove any eggs that were laid around the bum during the night.
  • Tell the caregivers at the centre, if your child has pinworms.

Children with pinworms may go to the child care centre or school.