I've had TMJ for 16 years and I believe I probably suffer from general anxiety disorder ( or am at least susceptible to it). I've come to learn that stress and anxiety do play a part in this. If you look at all the symptoms of general anxiety disorder, TMJ is actually one of the symptoms. I also have a forward head posture, which may also be linked to dizziness/vertigo type symptoms that I experience and is also common in TMJ sufferers. I didn't really see how far my head was forward until I saw myself walking on camera. The tight throat and chest thing is not nice but is worse depending on how I sleep, and so much worse if I'm bruxing. I know when I've been doing it as soon as I wake in the morning. How I feel when I wake affects how I feel the whole day. Sometimes I feel better if I sleep less. I'd love to know what I've been doing when I wake up feeling like crap. Perhaps we should all set up a few cameras to record ourselves in bed, nothing sexual of course
I think that TMJ sufferers don't think stress or anxiety is the cause because it's difficult to know you're experiencing it until it affects the body in a physical way. TMJ increases anxiety which in turn increases the symptoms of TMJ. You can get into a vicious circle that's difficult to get out of, to the point where you think you're going to die. I have been a computer programmer for 20 years and am sure that this has affected my posture, and any length of time on the computer and my symptoms increase a lot. Posture training is helping with some of the vertigo type stuff, but the neck muscles get stiff trying to force my neck into a more natural position ( ear above shoulder line)
It also feels like it's a hormonal thing going on, like reduced endorphin level and this can cause bouts of depression at times. I think anyone suffering chronic pain may potentially suffer from this.
I have most success managing my TMJ condition when I try to ignore all the crappy symptoms that occur in my body, as difficult as that is. If I start to ignore the twinges, tingling, spasms, ear ringing and strangled feeling, it helps stave of the panic attacks. If I try to do what I would like to do regardless of the pain level I'm experiencing, it seems to have a positive affect on all my symptoms. If I go to the pub and laugh a lot and try to enjoy myself, I can almost get to a stage where I feel normal, but I really have to work at this.