Two suggestions:
get an evaluation for gout.
see an orthopedic surgeon.
I severed all the tendons in the back of my right hand in 2014. Surgery and four months of rehab fixed the problem.
At first, surgeon wanted to wait and see. When that didn’t help, operation.
BTW, almost complete recovery. I can touch type again.
If you’re in north Alabama or southern Tenn. Contact TOC in Huntsville.
GOUT?
+++++++++++++++++++++++++++++
they can detect gout with a very inexpensive blood test.
but there is also pseudo-gout.
BTW - some of those statin drugs cause joint pain and other feelings of icki-ness. FWIW