Oct 03, · Symptoms of Threadworms in Adults. Mostly, threadworms, or pin worms, effect children, but adults are not immune. It is most likely that an adult gets threadworms from an infested child. They can live in the intestines for a month and a half, but the eggs can live outside the body for about 14 days. The most common symptoms of pinworms in adults is itching around the anal opening . Pinworms, also called threadworms, are parasitic worms that live in the intestines and rectums of infected people. Pinworms are small and thin (about ¼ inch to ½ inch long), and white or light gray. Cleveland Clinic is a non-profit academic medical center. Advertising on .
Deworming Tips for Adults There are several types of worms that can cause problems in adults, including threadworm, roundworm, strongyloides, whipworm and hookworm. As threadworm is the most common worm infection in Australia and New Zealand (with other worm types considered quite rare), this information focusses on this type of infection. Feb 14, · Threadworm eggs can survive for up to 2 weeks before hatching. If the eggs hatch around the anus, the newborn worms can re-enter the bowel. Eggs that have been swallowed will hatch inside the intestine. After 2 weeks, the worms reach adult size and begin to reproduce, starting the cycle again. Read more about what causes threadworms.