have a recurring issue. certain areas of my feet swell, become very red, sometimes painful area is white, severe itching and throbbing, and i feel like there are rocks under my skin but i do not feel any raised areas. normally i have found this to happen when i wear different shoes for more than a couple of hours. unfortunately that means i am stuck wearing the same shoes every day to work in which some days i still develop the sore areas. the areas tend to get worse as the night goes on and the "rocks" feel like they get bigger & more painful (even hours after i've taken shoes off). sometimes i can pinpoint the problem if i find the insoles of the shoes have worn down or if the seam of my sock is prominent but sometimes there isn't really any explaination and just "happens" on certains days even thought i have continued to buy the exact same designer shoes for years. i've searched the web and have found some people who explain similar issues but i have not been able to find any kind of answer. it must be more than just having sensitive feet. areas that become effected are, towards the back of my heals, on toes, and bottom of foot just behind the toes. i have scheduled an appointment but i know they symptoms will likely be gone by the time i get into the doctor. can you help me understand what might be the issue? THANK YOU!!!