Hi...he has a rash on his hands that is inflamed, swollen, looks like water blisters, painful, stinging, itching terribly. A couple weeks back he had a rash over much of his body, itchy mostly. The hands rash arrived 3 days ago and is different than the body rash. He can think of nothing different internal or external that caused it. He does have sensitive dry skin, but never had a rash this bad.