Intense Body Itching

Patient: About 2-3 weeks agomy body started to itch. Sometimes intense and if I scratch I can’t stop and scratch so hard and so much i take the skin right off. The areas of intense itching is head arms and thighs. I itch on my head, forehead, shoulders, back, tummy, hands, arms,thighs, aliitle on the buttcks and on my calves but not on my feet. I tried benaryl and cortisone