Hi barry,
I am sorry you are having these feelings, but I'm not sure I understand the question. Let me try a couple of things.
First, if you are asking if you have MS, I can tell you that tingling in fingers and toes is an MS symptom, but it is also indicative of many other conditions. That alone will not lead to a diagnosis.
Second, if you are asking if the tingling causes the same reactions as scratching on the blckboard or biting into metal, I do not know. I have the tingling, but not the feeling of hearing the scratching. Perhaps, if others experience the same thing they will respond here and I will learn something new. I often learn new things by reading through these MS blogs.
On another note, congratulations for quitting smoking. There has been so much in the media lately about the bad effects of smoking on MS in addition to smoking in general. You took a good step, and one that was probably not easy.
Now for the beer. A couple a week? Not bad. Who can complain about that? It sounds as if you are taking care of yourself but still having a good time.
Well, barry, I hope you find an answer. Good luck, and let us know.