I have ankylosing spondylitis. My neck is not completely frozen, but I have limited range of motion. Lately I've noticed that when I hold my head in one position for a few minutes and then try to move it, it catches and then there is a popping sound. I'm concerned that one of these times it won't pop, it just won't move at all. Am I making too much out of this? Or, is it a precurser to my neck freezing in one position?
