Hi _ I just posted this on another thread, but I see that it may better benefit this thread:
In regards to neck injury, I have also suspected for a long time that an incident may have caused my MS. I was choked to within an inch of my life (well, I was choked hard but not for a real long time) when I was in college by a boyfriend. My symptoms started shortly after this. Another thing that I just thought of yesterday dating back probably 25 yrs. ago was the stupid thing kids used to do to get a "high" feeling. It's sort of like kids today "huffing." My friends and I once tried it: Bend over at the waist and then press on both sides of the neck to cut off blood flow (or O2) and then stand up quickly. When I did it, I actually passed out because when I came to, a coffee table was toppled over and my friend was cleaning up spilled water. I was still standing, however. Either of these things seem like they could easily have caused the stenosis.
To speculate a little further, I had swollen glands as a pre-teen, but blood results showed no sign of mono. I never did find out why I had it, but I do have thyroid issues today (may be unrelated).
Also, I was thinking about how a baby's neck is so floppy up until they are strong enough to hold it up. It could be that posturing a baby and letting their neck flop to one side when they are sleeping, etc. could cause this, seeing that everything is in developmental stages at that point.
I saw someone mention tight neck space. It's interesting, because I am small, and I also have a mouth too small for the size of my teeth. I had to have 4 teeth pulled to make room for straightening. This theory seems to make sense to me, because my chin recedes a bit, too.