I thank God that your mother did not have a stroke, as I thought surely that's what you were going to say, as I read your opening remarks! My thoughts will be with you and your mother as you try and sort through the medical system for a dx. The neurologist should be able to advise you. You must have a medical background, and I can see that you will be a real help to your mother. I wish I could offer more substantive input as to what the problem might be. I have heard that Aspartame can be harmful but had never taken the time to learn any particulars. Don't they make some Spenda-based soft drinks now, such as Coke Zero, [?] that she might switch to? I should think that even fruit juice or sugars would be preferable if this problem HAS developed secondary to Aspartame, but I find it incredible that something still on the market has led to the type and severity of symptoms that your mother has. Please keep us updated on developments, and I feel that the expertise available in this forum will be of help and support to you. billie