Pinworms are tiny, white worms that live in the large intestine. They look like pieces of white thread. Pinworms are not a disease but they can make a child uncomfortable.
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.
Pinworms can be treated with medicine.
A child can get pinworms again by coming into contact with pinworm eggs. To stop the spread of pinworms, all caregivers and children may need to be treated.
Print this page as featured in the guide book, Sneezes & Diseases: A Resource Book for Caregivers & Parents