What are pinworms?

Pinworms are tiny white worms that belong to a group of parasites known as enterobius vermicularis. They are most commonly found in the intestines of humans, particularly in children. These worms are characterized by their small size, typically measuring around 0.5 to 1 centimeter in length, and their white color, which is often described as resembling a piece of thread or a pin – hence their name.

Infection occurs when the eggs of the pinworm are ingested, often through contaminated hands or surfaces. Once inside the body, the eggs hatch, and the adult pinworms reside in the intestines. They can cause itching around the anal area, especially at night when the female pinworms lay their eggs. This symptom is a primary indicator of pinworm infection.

Understanding what pinworms are is essential in recognizing signs of infection and implementing measures to prevent transmission, especially in group settings like schools and childcare facilities, where the risk of spreading is heightened.