I have been having sever pain/and tingling like a shock that travels from my ankle to the 3 middle toes. I can flex down ,up and outward with minimal discomfort, but not inward. It feels as though I have been given an electrical shock along with great pain. The foot with ache at times below the three toes just where they “bend” at the spot where they meet the foot. I also have a heel spur on that foot? Nerve damage or heel spur side effects?