I don't see those problems alot but now and then a Chiropractic adjustment does help relieve the spasm but most times it doesn't do didly squat because it is not coming from the spinal nerves.
A muscle freakout, I get them myself that can last for days, feels like someone is stabbing me in the back. I can go to bed at night and in the middle of the night wake up with the bastard stabbing.
Yes, us Chiropractors see other Docs, myself usually a Orthopedic who has done too many surgeries to mention and he tells me low potassium, calcium and magnesium contribute. Deep massage helps and I mean deep, acupuncture also helps but you need to find one that actually knows what they are doing.
Personally I screw my brains out and if it doesn't relieve it I forget about it in the heat of the moment and all is well
Without a doubt its not a rotator cuff or superspinatus muscle, if that was torn you couldn't sleep on that side and when it is completely torn you would have problems lifting your arm over your head. The ss muscle is the easiest torn muscle in our body and ask me how I know. I have no ss muscle in my right arm, tore it off 35 yrs ago and as long as your deltoid muscles are strong no problems. My left one tore 15 yrs ago and had it re-sewned back but this past yr it tore some again and the ortho said after mri that he advised against a sew job cuz there wasn't much left to rob in there to fix it but a cortisone shot in the inflamed spot on the tendon helped alot and I followed it up with acupuncture and finally realized due to my lazy ways that if I don't use it you lose it so I am back lifting weights and pain is nothing during the day but the darn night time it can kick up to a 3-4 with 10 being unbearable.