About Worm InfectionIntestinal worms such as roundworm, threadworm (pinworm), hookworm and whipworm are common in children and spread through contaminated soil, food and hands.Symptoms include itching around the bottom at night (threadworm), stomach pain, poor appetite, weight loss and, with hookworm, anaemia. Some people have no symptoms.Medicines used for Worm InfectionWorms are treated with medicines such as albendazole or mebendazole. Hand washing, cutting nails short, wearing shoes outdoors and washing fruit and vegetables help prevent re-infection, and the whole family may need treatment for threadworm.When to see a doctorSee a doctor if symptoms continue after treatment, if you see worms in the stool, or before treating a child under two or a pregnant woman.This page is for general information only. Many of these medicines need a prescription; please use them only on the advice of a doctor or pharmacist, who can choose the right medicine and dose for you.