When PI itching drives me nuts, I either 1) use an ice cube/water mix in a ziplock as a compress; the cold seems to desensitize the nerves for awhile. or 2) run very hot (short of scalding; you don't want to make matters worse) water on the rash. Not only does this absolutely feel great, but it also provides relief for some time thereafter. I don't recall the theory behind it, but it works. Just be sure that you then dry it well and then you can follow up with calamine or another drying agent.
Rick |