Pinworms (Enterobius vermicularis) are teeny, white, threadlike roundworms that infect the intestines of humans. These parasites hatch in the small intestine, then move on to the large intestine where they reside for about one or two months. After that timeframe, female pinworms crawl downward and out of the anus for the sole purpose of laying… Continue reading What Are Pinworms? Symptoms, Causes, Diagnosis, Treatment, and Prevention