What causes enterobiasis?
Your child can have enterobiasis after he swallows pinworm eggs. He may get pinworm eggs when he stays with other children or adults with enterobiasis. He may also get eggs when he touches bedding, clothes, or toilet seats that have eggs on them. Your child may also get infected by breathing in dust that holds the eggs. The pinworm eggs may get into the air by coming loose from bedding and clothing. These eggs will grow into pinworms in his intestines, and may stay there for months. The female pinworms lay eggs on your child’s anus or near it. Your child may scratch his anus, and swallow these eggs by putting his fingers in his mouth.