Sympathies OP and PPs. Recognition of what others say!
Women, especially peri&early post menopausal are apparently more prone, due to hormonal changes affecting muscle mass and physiognomy. Secondly, the way we tend to carry weight over one shoulder whilst doing something with other hand (yeah, multitasking)
Naprixon is OKish for pain relief but Drs won't prescribe for long for side effects - endure you have a stomach protection like omiprazole (sp?) too. Short term, the cheap freeze spray and patches at least helped me get some relief to sleep.
Manipulation from Chiro & exercises helped me (the finger tip walking up the wall esp, v v gradual progress).
Most important though was cortisol & water injections with specialist. Some gps can do them, but only licensed to do so with small amount of liquid.
Specialist (consultant surgeon, winding down to retirement, working two days a week) referral through chiro. Honest that current research indicates water in cortisol injection possibly as much use in opening up capsule. Either way, able to use much greater amounts of both. Three injections, targeted using ultrasound. V painful for next 48 hrs, eased within week, improvement in movement range in weeks, resolved in 2 months. No recurrence in 5 years. First shoulder (right) took almost 2 years before saw specialist, second shoulder (left) saw him within month of diagnosis.
Cant remember uothread if someone mentioned the clingfilm analogy? Sorry if repeating. Muscle becomes like clingfilm covering very hot dish taken out of microwave. Shrinks inward, attaching itself to food, all air & liquid btwn removed. Clingfilm/muscle becomes unworkable. Aim of manipulation, inection etc is to introduce liquid back between layers, to allow muscle/film to become malleable again.
Hth.