This sounds like pinworms, but a doctor must check you out to be sure. TeenHealthFX cannot offer a diagnosis, so a visit with your healthcare provider is important to determine what the cause of this condition is.
Pinworms are very small light-colored worms that can be seen around the rectum or in feces. People are infected by unknowingly eating microscopic pinworm eggs. The eggs pass into the digestive system and hatch in the small intestine. From the small intestine, pinworm larvae continue their journey to the large intestine, where they live as parasites. About 2 to 4 weeks after the pinworm eggs were originally acquired; adult female pinworms move from the large intestine to the area around the rectum. There they will lay new pinworm eggs, which trigger itching around the rectum. When someone scratches the itchy area, microscopic pinworm eggs are transferred to their fingers. Contaminated fingers can carry pinworm eggs to many different surfaces, including: bed linens, towels, clothing, toilets, drinking glasses, and food. Pinworm eggs are able to live on a surface for 2 to 3 weeks. This is why strict hand washing is so important to stop the spread of this infection as well as others. Pinworms should be treated with medication. Please contact your doctor, or if you live in northern NJ, call the Adolescent/Young Adult Center for Health at (973) 971-6475.