My son 40 ,rash itching from knees up,states feels itchy under skin as well,says it is unbearable. Been to a dermatologist,who is referring him to an ENT...Previously has been on steroids,which his primary prescribed..and now finished with steroids his labs are out of whack..no one seems to know what the rash & itch is from...what do you think the ENT s possible diagnosis could be... he is becoming depressed due to this condition...thank you...Lynda