I have overcome a number of obsticals for my upcoming Camino in June, but have encountered a crazy one now and hope someone can help!!! I'd been walking 12 miles at a stretch with no problems, but when I increased to 18 miles I now have a horrible beet red splotchy rash on my lower legs and feet. It doesn't itch and Benedryl doesn't help it. Today after walking I found hives up to my knees. I assumed it is a sock allergy, but have changed liners 3 times and nothing seems to help. The outer socks are various kinds of wool, but I've never had a wool allergy. Could sweat be adding to the problem, and how in the world do you avoid that? Any suggestions will be appreciated.