More on Healing Frozen Shoulder
The medical name is Adhesive Capsulitis, but adhesions aren't always the problem. Sometimes your muscles become chronically tight or spasmed and work against each other. If this is the case, chances are you have tight or spasming muscles elsewhere in your back or neck as well. Causes vary. Mine were from hypothyroidism, which has since been medically corrected.
Your frozen shoulder will release when it's damn good and ready! Meanwhile, some things you can do to hurry it along: apply moist heat as often as possible; do your level best not to reinjure it; don't let anyone, and I mean ANYONE, talk you into moving your arm beyond a comfortable range of motion. Well-meaning PT's can set you back by months. Exercise your arm and shoulder inasmuch as you can with normal everyday activities, but don't do 30 reps of anything, and don't stretch the arm beyond your comfort range. Something that really helped me was to put a moist-heat (microwavable) pad on the shoulder for 10 or 15 minutes then tighten all the muscles in that arm and shoulder, all the way down that side of my back. You do this for only a few seconds at a time several times a day. It helps reeducate your muscles to work the way they're supposed to and eventually they will start to loosen. A good Feldenkreis practitioner can be helpful and more gentle than most PT's are.