Pinworms are small, white parasitic worms that primarily infect the intestines of humans, especially children. They are most commonly known for causing an itchy sensation around the anus, particularly at night. The scientific name for pinworms is Enterobius vermicularis. Infection occurs when eggs are ingested, often through contaminated hands or surfaces. The life cycle of pinworms involves the female laying eggs in the anal area, which can lead to further spread if not properly managed. Good hygiene practices, such as regular handwashing and keeping fingernails short, are essential in preventing pinworm infections. Treatment typically includes over-the-counter medications that kill the worms and their eggs.