I have this tight feeling that happens in my head like the muscles in the back of my neck are tightning up and it feels like my skull is in a vice, this happens when I am watching television, working on the computer sometimes, it is like my brain gets overstimulated, I used to get panic attacks with it, but so far since I have been on Zoloft the panic is less. I was wondering what happens to me might be related to the anxiety and panic or something else. Any help would be appreciated I am just searching for an answer that might help me cope better. Thanks everyone.