I was conflicted about suggesting alcohol. It brings on its own set of issues and may have little effect. Personally, I wouldn't use it more than once or twice.
Next, I'm gonna presume you're maintaining a healthy diet.
Have you tried yoga? Or daily stretching exercises. Making the joints more flexible might loosen up your nervous system.
Also, have you heard of something called bioelectric massage? I know little about it, so it's unknown territory for me.
Beyond this, it's at making a wish on a falling star level. Sorry.
I wish you well and hope you find a solution that works for you. Just don't rely heavily on alcohol, it rarely ends well.