I've seen quite a few accounts of people with CCI also having jaw issues. Have you looked into Temporomandibular joint syndrome (TMJ)? Jaw misalignment can also be caused by AAI or CCI and this can itself create a whole host of painful issues.
I had no problems with my jaw until trying very gentle upwards traction on myself - I have been diagnosed with cranial settling by Dr Gilete. I placed my hands around the side of my head, partly under my jaw, & lifted. Since doing that the right side of my jaw has been clicking when I eat. It is not painful, but does lend weight to the lax ligaments theory. Prior to this I did not believe I had any laxity.
Tight neck muscles can also be the result of ligament laxity, the muscles contract to overcompensate - not due to inactivity necessarily, this can be an indication of instability. My neck muscles are very tight and painful and I have CCI and AAI.
Mine too! Again I did not have a painful neck (although I did have severe headaches) until after CCI came onto my radar & wondered if I have been consciously/unconsciously holding my neck in a rigid position because of it. Perhaps it is just another symptom. Certainly my head does feel "heavy" & hard to hold up - I need to sit with head support.
Does anyone find wearing a collar helpful? I tried an Aspen Vista but found it too uncomfortable. I may try a softer one but am concerned about causing further weakness.
B xxx