I also get itching on the feet and the hands only. It is red but under the skin. Not blisters or welts. It never completely goes away but most of the time it does not itch and then all of a sudden breaks out for awhile and is very itchy. It started when I was about 50 and continues now that I am 65. I have had multiple allergy testing, seen a doctor and a dermatologist and no one can figure out what it is. Any suggestions is appreciated.