About 3 years ago I stepped up on a curb and felt the most intense burning pain in my foot, felt like it was on fire. But after a few minutes it went away. For probably the next solid year after that I would randomly get shooting pain in that foot randomly for no rhyme or reason whether I was moving or stationary, standing or sitting or laying down. GP told me it sounded like plantar fasciitis but after about a year of random pains it just one day went away. I think what really happened was I cracked or broke a bone somewhere in my foot and it took a year to heal itself.