My feet have developed blotchy red blisters, or something like blisters. They are on the heels and above the big toes. They only came after I started wearing work boots for my new job. Now they ARE handed down from my brother but they haven't been worn in years. It only really bothers me when I try to sleep, I'm too busy to notice otherwise. I haven't spoken to my doctor yet, just rubbed some peroxide on the affected areas, still waiting for results. I'll keep trying this for a few days. I just want to know the cause. I prefer prevention over treatment, I think all sane people do.