Did you have any back surgeries? My feet were numb (due to compressed nerves) I had fusion & decompression done to make a long story short . Now, bottoms of my feet have been active ever since - burning, tingling,etc. non stop. I must wear moccasins in the house. No more barefoot. Sensations are horrible. No walking on sand anymore. Gym shoes are ok- certain kinds of course. Its a life changer & im not happy. Rather depressing, the pain for 4 years now!