Hello – I first noticed a burning pain (to the touch) on the left side of my right big toe about three weeks ago. I thought it might have been a bug bite but it hasn’t healed. On closer inspection, the skin is hard and swollen, like a big callous, it gives a burning sensation to touch, and there is a similar spot developing on the back of my right heel. i’ve tried looking into this but I can’t seem to find any clear answers, please help! i’m 25 and fairly active.