I know that self-diagnosing by browsing the internet is often a bad idea. But in this case I think I got it right.
For months, every time after I get out of the shower, my legs would start itching. At times it is almost unbearable, and I sit there scratching away. It peaks about 5 minutes after drying off, and then usually lasts about an hour. It’s mostly in my feet and legs below the knees, though I get a little itchy on my back and other places.
At first I thought maybe I was allergic to the soap, or maybe the detergent or softener used to wash my towel, but switching things didn’t help at all.
Finally a little research on the internet showed that I was not alone: I had Aquagenic Pruritis. Aqua = water, Genic = cause, Pruritis = Itching.
There is no cure, but there are things to do to reduce the symptoms. I have tried three things:
1) Rub Benadryl lotion on my legs after my shower. It helps, but it takes 10-15 minutes to work, and it’s unpleasant waiting for it to take effect.
2) Desensitize the skin by multiple applications each day of a capsaicin lotion. (Capsaicin is the active ingredient in chili peppers that make them taste spicy. Be warned not to touch your eyes after applying!) I don’t know if this has helped. Maybe I don’t put it on enough times each day.
3) The thing that helps the most: Rub baby oil over my legs before my shower. Apparently this seals the skin so the water has less contact. It makes my legs a little oily, naturally, but a light layer isn’t bad. And it helps a lot, almost totally eliminating the itch.
I’ll keep up the capsaicin treatment for a while, and hopefully I can reduce my skin sensitivity, but for now I’ll continue going to bed oily. And if I forget both, there’s always the Benadryl with it’s belated help.