I also have the red hives under my left jaw area and I keep wondering why it was doing that as well. I have seen several doctors about my bite and I am actually having open joint surgery in 2 weeks. Before this, I have had two arthrocentesis and an arthroscopy that have all failed. My doctor now is very concerned about my bite and that is one of the main resons he is doing the open joint. That makes sense about the jaw being able to realign itself to a certain extent. When my bite is centered, I am unable to move my jaw to the right at all- it feels as something is blocking it from moving. Then, when my bite is out of line, it is much more painful and I cannot move it to the left- as though something is blocking it. Hopefully this surgery will be the last(at least for a while) and will help me get off this liquid/mush diet I have been on for 7 months.
Thanks for your reply... it really helped explain a lot of things I was wondering about.