Hi
I suffer from full body twitching cramping and neuropathy symptoms of burning stabbing tingling and etc..
You said you have thyroid problem and I have seen this mentioned in thyroid patients before.

For me no underlying cause is found yet. Have you had any testing like Emg/ ncv.

For me I always had lots if seosanol allergies and upper respotory infections and sore throat so maybe there is autoimmune going on.
Flu shy made me worse!!

Have you had your thyroids rechecked

It's hard but post on neuropathy side too they wil tell you lots tht will help.

Do you have any sensory issues?