Which nematode is commonly referred to as the "pinworm"?

Enterobius vermicularis is commonly referred to as the "pinworm" due to its distinctive thread-like appearance, which resembles a pin. This nematode is a small parasitic worm primarily affecting humans, particularly children, and causes enterobiasis, a type of intestinal infection. The female pinworm lays eggs in the perianal region, which can lead to intense itching and discomfort, especially at night.

The life cycle of Enterobius vermicularis involves the ingestion of eggs, which hatch in the intestines and mature into adult worms. The adults reside in the colon, and females migrate to the anal area to lay eggs, promoting transmission, especially in crowded conditions like schools and daycare centers.

Understanding the characteristics and life cycle of this nematode is crucial in diagnosing and managing pinworm infections, making knowledge of Enterobius vermicularis essential for those studying parasitology.