Do this two mornings in a row. Bring the slides to your physician's office for examination with a microscope. Your physician will call you to give you the results. If pinworm eggs are seen on the slides, your physician will prescribe a medication. If your child has had recent contact with a child who has pinworms but has no symptoms, your child probably won't get them.
Pinworms are harmless and are never present very long without causing some anal itching.
If you want to be sure your child doesn't have pinworms, wait at least a month. A swallowed egg will not mature into an adult pinworm for 3 to 4 weeks. Then contact your physician about doing a Scotch tape test for pinworm eggs. Your child can get pinworms no matter how carefully you keep your child and your house clean. The following hygiene measures, however, can help to reduce the chances of reinfection of your child or new infections in other people.