I've had head pressure for the past 3 months it is in my whole head, mainly around the temples face, and jaw. It isn't like a pain, I just feels like my brain is expanding in my skull and there isn't room for it, it goes in and out, when I first wake up I'm fine but as the day goes along it comes in, if am doing something like talking or focusing on something else it doesn't bother me but if I'm not it's bad. I also get a faint ringing in my ears with some dizziness, and I'm really shaky. I'm scared that there is something wrong with my head, like my brain is swelling, or a tumor or my brain is just going to stop working. I was diagnosed with panic disorder about 2 months ago and I am on 50mg of Zoloft. I don't know what to do anymore my mom keeps telling me I'm fine but I can't get the thought out of my head that I am going to die soon. Does anyone else feel like this?