Pinworm Infection

What is pinworm infection?

This infection is caused by a small, white intestinal worm called Enterobius vermicularis (EN-ter-O-be-us ver-MIK-u-lar-is). Pinworms are about the length of a staple and live in the rectum of humans. While an infected person sleeps, female pinworms leave the intestines through the anus and deposit eggs on the surrounding skin.

Pinworm Infection Symptoms

What are the symptoms of pinworms?

Intense itching around the anus and/or vagina are the classic symptoms of pinworms. Less common pinworm infection symptoms range from

  • upset stomach to loss of appetite,
  • irritability, restlessness, and
  • insomnia.

Most infected individuals have few or no symptoms but, if the infection is heavy, the symptoms can be correspondingly more severe.