Ginnie
I find myself utterly speechless at your story, because, unfortunately, it sounds all too familiar.
Let me explain a bit about my own circumstances in the hope that it will assist you.
Ginnie, I too was diagnosed with a peripheral neuropathy and then indeed MS several years ago. This followed the symptoms of numbness in my legs and intermittent shakiness and pains in my legs, along with shakiness in my arms and hands and overheating, which comes and goes, sporadically (or so I thought).
I was sent off to Neurologists when I told my GP of these symptoms and had a battery of tests including numerous MRI brain and spine, lumbar puncture (gold standard test for MS) and nerve studies. The upshot was that all the tests were normal although this does not rule out the possibility of MS and I was told this was the cause of my symptoms along with Peripheral Neuropathy and that nothing could be done for me.
I sought a number of different opinions, whom all disagreed that I had MS and indeed several eminent MS specialists said I should be tested for other things (including...get this....disorders of metabolism) and that my symptoms were atypical for MS. Anyway, my doctor ignored this letter and decided to just label me as an MS patient anyway despite him being told by numerous parties that an open mind was needed, along with further tests.
Fast forward to today and in recent time I had lost 21 lbs, could not stop going to the toilet, especially at night, am constantly thirsty and hungry and have now actually noted that there is a pattern to this shakiness and feeling hot and that by using a blood sugar metre I can spot correlation between my bg levels, my food and the symptoms. It is impossible to say at the moment whether or not this is down to diabetes but certainly my readings are in the borderline range, before also factoring in the correction of lab tests over metre readings.
I may be way off the mark here but could it be that your peripheral neuropathy and other "neuro" pathology is actually the result of undiagnosed and indeed untreated diabetes, for a long time, as I understand that peripheral neuropathy is in fact a complication of diabetes. I would suggest that you find out more information about the neuropathy side as it may be that had you been diagnosed with diabetes earlier, this could have been avoided, that is, if the neuropathy is definitely a complication of unmanaged diabetes, and not a result of something entirely different. You won't get an answer on that from the medical community as that would be them admitting liability, but I would certainly, in your shoes, consider your options in this regard.
With regards to testing, again, I find myself astonished that the diabetes clinicians you are seeing have not properly familiarised you with the appropriate means by which to test and manage your condition. Of course you should be entitled to a metre, test strips and all the bits and bobs, so that you can check your bg and begin to understand which foods do what to it and how to monitor and get your blood glucose levels under control. If you do nothing and it is left simply unmanaged, there are of course serious implications in doing so, in that potential complications can result in the long term, of which, peripheral neuropathy is one, amongst many others!! I do not want to frighten you of course, but please go and do some reading about the complications and the implications of not managing the condition.
Quite frankly, I think you need to see your GP and raise formal concerns over the lack of information you have been given so far about how to manage your diabetes. It is utterly scandalous what has happened with no advice or assistance being given to you about testing and even asking you to return a pamphlet is farcical. It sounds to me like you need a new diabetes team and to start again and promptly! The way you have been treated so far is simply not acceptable, in fact, it is disgraceful!
Unfortunately, like you, I am in the position of having believed for several years that my symptoms were due to neurological causes, when in fact, it now appears (and of course this may be wrong) but it appears on the face of it, that endocrinology is the specialty I should have been referred to in the first place. It simply beggars belief, like you, I don't quite know how to proceed at the moment as my GP completely refuses to consider the possibility that I need to see someone other than a Neurologist!