I have neuropathy throughout my body, even my torso and face, but I have not found that my speech is affected, (yet?). I know my brain has. My long term memory is excellent, but my short term is terrible and my thoughts are very scattered and confused. I am no longer articulate and I fumble for words.

I would suspect that speech could be affected. It seems that this can affect every nerve in the body so it is highly possible.