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A.,
You can check your daughter at night when she is sleeping, use a flash light and check her bottom. If you see small whitish grey wiggley little eyelash type of movement from her rectum, she has pinworms. The good news they are totally treatable and come from humans, not animals. Start the wash, use soap and water with a nail brush at the bathroom sink and you will be free of the little critters. Much easier to get rid of than lice!!!
Good luck1
A.