Hi, y daughter is 14 years old. She at first appeared to be healthy. All of a sudden, she started loosing weight, accompanied by a rash always on her left cheek and left arm. Hair lost and thinning, lots of headaches, and now she daily complains of her legs and arms hurt real bad. It has began to affect her walk. Every so often she complains about itching all over and feeling as though something is crawling on her. We took her to the her doctor. They ran test and said nothing was wrong. Please help. We know her, and we know something s wrong.