Yep it can lead to something called RYE neck. Which is so painful when the muscles go into spasm You can use biofreeze on the neck.also
My Dr gives me diazapam
2 mg to relax the muscles. Prevents them knitting and bring stiff. Gently massage the are too.it help.s

sleeping is kind of a circus act for me. I have to find a position of sleep that doesn't hurt my head, neck and shoulders and I have damage in my lumbar spine. So I have to find a position that doesn't hurt my back and certain positions cause my legs to cramp or my arms to hurt. I have read that improving our deep sleep helps with all aspects of fibro. It's not going to fix everything, but it's supposed to help.

My neck and the back of my head are actually sore to the touch. I have a terrible time finding a comfortable sleeping position.

I understand that. I m similar.compressed fiscsxat the top of my back. Very hard to get the right position xx

Knotting !!🙄🙄🙄