My mouth will not open and close evenly and when I lay down my jaw locks up and I can’t open my mouth. When I’m up it always pops on the right side opening and closing my mouth while talking and chewing. I would like to know why it does this and what is causing this and if it can be treated. I am in pain everyday with this problem and it is very frustrating. It started a few years ago and it is getting worse. Please help!! Thanks!!