Hey Mrs.Tank,
It just occured to me that your foot problem may not be an allergy. I have a condition called HyperHydrosis. It causes my feet to break out with thousands of little vesecules, which itch, and burn, much like atheletes foot. I only have this problem during the summer months, if my shoes do not allow alot of air transfer "breathing". If left untreated, can lead to cracked and bleeding feet. If this is the case, change socks often, I do 4-6 times a day. My doctor prescribed a creme to keep my feet dry, that has a 10% solution of Aluminum Chlorohydrate, and it appeared to help. The only problem, with the prescription, was it cost me $60 a week. Until I discovered that Arrid XX, or extra extra dry, had a 24% solution of Aluminum Chlorohydrate, and costs about $3 a week.
Your problem might be an allergic reaction, but maybe not.
Dave (A.K.A. Homebrew)