I have no diagnosis because my symptoms are not specifcally pain. The more I use my hands or stand or walk the more my back tightens up.

I have to sleep with my arms bent in front of me or I wake up with tight/torn muscles in my back or glutes.

I tried holding my arm out straight and moving my fingers back and a nerve pulled under my arm, it was then uncomfortable to use the arm for about 2 weeks

I wake up with my ring and little finger numb on either hand

My shoulder blades will spasm or my lats muscle will tighten seemingly depending on the position of my arms.

I am being treated for terrible head forward shoulder forward posture, but no diagnosis.