I believe I'm dealing with the same thing when it comes to head pressure when I have gas. Last year, my head felt clogged one day and it lasted all day long. I thought it was sinuses. About two weeks later out of nowhere I got dizzy and was rushed to the hospital. My head was burning and I felt fluid around my ears. My family doctor treated me with an antibiotic that didn't work. I went back to him and he put me on a double antibiotic that eased the head pressure after day 7 but after 10 days it was back. The cat scan did not show any problems with sinus or anything else. Four months later I had another encounter with dizziness and my hearing would leave and come back, so I went back to the doctor. He couldn't help me. I decided that I couldn't take it anymore and went to a holistic/chiropractor. He aligned my body and I became balanced again. I felt a burning feeling in my head and then the pressure went away after I got acupunture on my ear. I started taking wheat grass every day which helped. I eliminated spicy and greasy foods. I felt okay for a few weeks and then it started back. I then went to the ENT. He told me it sounded like I had Meniere's disease and that fluid is not draining properly which causes me to be embalanced. It is all theory. I tried the water pills they prescribed me and I immediately threw them out after the third day. I constantly went to the bathroom and it didn't feel like I ever had fluid in my body. My body would easily hurt if I would turn around or someone hug me. I decided that one of my problems was gas and maybe if I'd deal with one problem at a time, I could figure out what's wrong with my head. I paid attention to the foods I ate when I would get gas. It happened to be raw broccoli and bell peppers when I ate a salad. Then also, any kind of nut. I eliminated those and my gas went away but guess what, the head pressure was gone too. I added back the nuts to my diet and found out that I got gas again, and the head pressure came back. I'm going to experiment with it some more but I am convinced that gas has escaped near to my head. This didn't start happening until after I had pneumonia last year with pain in the center of my chest. Everytime I would have gas it would move further up where I would feel pain in my throat and finally I started feeling head pressure. I'm thinking I know my body better than the doctors do. I will continue to seek holistic care rather than over the counter and prescription drugs. They led to other problems that I'm glad I was able to get under control.