I too have isues with my shoulders. I have an old injury in my right shoulder so I have limited range of motion. I overused my left shoulder and ended up with a torn rotator cuff. I had it repaired about 18 months ago. I am still doing the exercises from PT but have issues with my job (I am a bookkeeper on the computer all day long) and the muscles in my shoulders get so tense it wraps around my shoulder blade and goes up my neck at times just like shihtzulover. I have tried icing, some of those rubs for sore muscles, acupuncture, chiro, PT, massage, just about everything I can think of to get it straightened up. If anyone knows anything that will help in just daily routines I sure would like to know also. We have even purchased me an ergonomically correct desk at work and it doesn't seem to help at all.
Amy