My wife is 48 years old, diabetic and had minor hear attack in 2008 December. She is taking medicines as per the diabetologist. Of late she has immense burning sensation in her feet and she keeps ice to cool it. She is using Deep Senz (Eris company) as advised, but not much relief in her legs from burning sensations. Please advise what has to be done now as she becomes restless and can not walk/stand.