Have you had your thyroid checked? I had my thyroid dystroyed by radiation and I started having burning sensations in my feet and legs...my thyroid was low. My Dr. changed me from Levoxyl to Armour and my pains have gone away and I have more energy. Also have a friend whose thyroid was destroyed by chemo and he had the burning feet and legs and now he is getting relief from thyroid medicine. Hope this helps!