That sounds like neuropathy. You need to have your blood sugar levels checked, to be sure you don't have diabetes (the major cause of neuropathy, or nerve damage) and if that isn't the problem, then go see a neurologist. It could be damaged nerves higher up in your body or it might even be a blocked artery in your leg. At any rate, don't fool around, because it could be serious. I have neuropathy from diabetes, and I've lost a toe from it plus having great difficulty in walking. I have to wear special shoes for the condition.