Hello, First of all You have to make a diagnosis of pinworms. In my opinion You should do a stool collection test to check for parasites. Also You can place a sticky piece of tape against your child s rectum. Pinworm eggs will stick to the tape so than the doctor can look for pinworms or eggs under a microscope. The best time for a tape is at night or in the morning before a bath. If your tests comes back positive your doctor may prescribe medications like Mebendazole, Albendazole or Pyrantel. Please note that this medications may be prescribe to all members of your household to prevent infection. Also You should wash bedsheets, towels, underwear and nightclothes every few days and change underwear and bed linen every day. Shower in the morning (it can help reduce the number of pinworm eggs). Try to keep fingernails short and wash your hands often to reduce risk of getting an infection. Do not scratch - ask your doctor for anti-itch cream. Eat fresh fruits and vegetables and try to limit sugar. Eating more garlic may also help. Hope I have answered your question. If you have any further questions I will be happy to help