Worrying symptoms

[somerandomperson]

Hi

I was wondering if anyone had any thoughts on the symptoms I've been experiencing.  I'll try to keep it as brief as I can!

In April 2017 immediately after a week of lower back pain I started experiencing several symptoms, including feeling off-balance, pins and needles, missing letters when typing, muscle twitches and jerks on and off all over, bee-sting sensations, tiredness, bloodshot eyes, difficulty opening eyelids after sleeping.  This led to a lot of worry and hence I stopped doing a lot of the activities I had previously enjoyed doing.  The symptoms would vary over the following few weeks and then almost disappeared for a few weeks between June and August.  Then, after another week or so of lower back pain, some but not all of the symptoms reappeared, with the jerks worse than before. In October I started to experience a constant high pitched whine in my ears/head that would worsen if I jutted my jaw out.
I eventually saw a neurologist in December and I was diagnosed with a functional disorder.  I read stories of patients with functional disorders but none of them seemed to match what I was experiencing.  While searching online I stumbled across a page on FTD and PSP, and saw that the list of symptoms were a much closer match.  From then on I have been more or less convinced that I have some form of FTD.  I wrote to the neurologist with my concerns but did not get a reply.
I had an MRI done in January which came back with no significant anomalies other than some neck wear and tear, but I had read that early stage FTD/PSP would not likely show on an MRI scan anyway.
Since then my balance has worsened, especially in the past week, again preceded by lower back pain, and also some upper back pain this time.  I think my speech is now also slightly affected, with some slurring of certain words with sounds like "sh", "s", "f".  The whine has been continuous since it started about ten months ago.  I don't always notice it, but I can share confirm it is still there by sticking my jaw out, which makes it much louder.

Any thoughts or feedback would be very welcome.

Thanks for your time.