Re: This comment in a whimpering thread →[More:]
I didn't have a sinus problem at all. What I have is instead Temporomandibular Joint Disorder, usually referred to as TMJ. It probably stems from getting hit in the face at karate.

I now have a mouthguard I wear at night to keep me from grinding my teeth and even after only a couple of nights I feel immensely better. I'll probably have to wear it the rest of my life. It's hard to describe how much better I feel.

My only regret is not going to the specialist (and then the dentist) sooner.