I was doing some research tonight on TMJ which is a condition that my sister has, but I never related it to my ears. Some of the symptoms sound similar. Dizziness, fullness in the ear, sinus congestion...I decided to look this up because I noticed that I was having slight pain/fullness not just in my ear but around that entire area. And when I open my jaw I get the most awful crackling and stretching sound. And it comes right from that area that connects your jaw there next to your ear. Just something else for me to consider since all my testing keeps coming back negative. Who knows....I am grasping at straws now, I know...but when you don't have med coverage you get desperate. Maybe I will pick up one of those things at the drug store. That thing you put in your mouth to sleep with. I do have an overbite and I also grind my teeth at night. You never know. Can't hurt. I'll keep u posted.