I have RA in my shoulder as well as many other places but these days it's my shoulder giving me trouble. All the muscles around keep getting very tense to the point where I have a constant cric in my neck,I also have RA in my kneck so It could be the two working together. It's just odd that it's so muscular. I stretch regularly (as much as I can) so It's not the lack of movment. Anyone else have muscles issues?