hi I have a close friend who has had a bad skin problem, his head and face looks dry and like it has dandruff. the arms, legs, back, stomach, bottom, as well as feet are dry and scaled up causing his body to shed skin and sometimes bleed. he has been to doctors continually about it they draw blood and always tell him they don t no what it is. I am trying to find out what it is so I can help him to get the right meds to treat it so he can begain to heal and not be in so much pain.