I suffer from nerve problems a lot.
I have cerebral palsy which means I'm a little twisted up body wise (probably mentally too lol) and the older I get the more I have joints and nerves rubbing on stuff.
I get the tingly almost numb arm feeling too - I got a diagnosis much like yours - no answers for you tho I'm afraid.
Drinking will do nothing for anything and make you worry and obsess more - dump the 6 pack man
D