I'm under the care of a dermatologist, who is running out of ideas to help. I've changed deodorant, laundry detergent, shampoo and multiple types of both OTC and prescription allergy products. I basically only wear cotton. I've also tried multiple prescriptions for pain block medications. None of them worked. I don't need to block pain, I need to block itch. They travel different paths. And apparently no one has invented an itch block medicine yet.