Re: dull pain behind left ear
I usually post in the Immune Disorders forum, but I just wandered over here, because I have been experiencing an increase in migraines, specifically prolonged migraine aura, but I'll start a different thread for that.
I get the same kind of pain you're describing, I think. Was it at the top of the roundish bone behind your ear (the mastoid bone), fairly close to the back of the ear itself?
The weird thing about my episodes of pain in that region is that I used to get them only when I was just about to start my period, usually the morning of. I called it my "ear bone headache" - lol.
But I'm still getting the pain, even though my periods have stopped. Sometimes I think it's related to the migraines, but when my migraines weren't as bad as they are now, I also got them (in addition to the period ones) whenever I had a cold or, yes, a sinus infection. One of my doctors (either my ENT or PCP, I can't remember for sure) told me that there are a lot of lymph nodes in that area and they will respond to an infection in the same way that the ones under our jaws do, and become sore or inflamed. (I don't know what that has to do with my periods, but I don't know a lot of things!).
I'm sorry that I didn't see your post until now. I hope that with the resolution of your sinus infection, your "ear bone headache" is better now.
Please let me know how you made out. Take care.