Intestinal worms are small organisms that can live in the human body. They usually enter the body in contaminated foods, drinks, and soil, and can cause gastrointestinal symptoms. Pinworm infection, also known as enterobiasis, is a human parasitic disease caused by the pinworm. The period of time from swallowing eggs to the appearance of new eggs around the anus is 4 to 8 weeks. worms, their parts or eggs can be sometimes found in the stool itchy skin rash swelling around the eyes swollen itchy bump on the site of the parasite entry (usually on the foot). Worm eggs, shed in the stool of humans or animals infected with adult worms, can contaminate soil or water. (rectal prolapse is when the tissue that lines the rectum falls down into or sticks through the anal.). Parasitic worms in humans are often associated with travel, but you can also get them at home. These organisms live in and feed off a living host, like a human. Following further maturation, the newly pregnant worm migrates from this region to the rectum. From here she will make the trip to the anal area (commonly at night) and deposit her eggs. Adult females live for approximately three months in their human host. Pinworm infection is an infection of the large intestine and anal area by a small, white parasite that resembles a worm. The medical name for the parasite is enterobius vermicularis, but it is commonly termed a pinworm in both the lay and medical literature. These parasites are also termed seatworms or threadworms, and the infections is medically termed enterobiasis, oxyuriasis, or helminthiasis. Millions of people are infected by the parasite worms worldwide. More than 100 types of parasites worms can be living happily in human bodies including in feces. Only about 5 percent of these varieties can be tested positively with only 20 percent accuracy. The most common worms living in human intestine as parasites are roundworm, pinworm. You might be asked to provide a sample of poo so it can be tested for worm eggs. If you have worms, your gp will prescribe medicine to kill them.