@ChiggyT, I know you have not been on Tinnitus Talk in a while, but if you are alerted by this post, how are you now?
I read through and found a surprising number of closely related symptoms.
Numbness in legs and ankles, pins and needles now in both hands when waking despite not lying on them, severe dry mouth when waking, very bad ear crackling, etc.
I'm on no type of medication though, but despite seeing both a neurologist and rheumatologist (who both feel I am fit, healthy and well - and had extended blood tests), I feel I have nowhere left to turn.
I didn't realise the correlation between ear crackle, numbness, pins and needles and severe dry mouth.
Mine seems to have started with ear canal trauma by microsuction (possible nerve damage) and then made worse by custom earplug fitting - which may again have triggered nerve issue (my hand pins and needles didn't start until then).
I have incredibly severe tinnitus too, which makes all of this, without answer and all tests coming back clean, particularly debilitating.
Did you ever get any answers?