Lately I've been stressed and having mood swings. My left arm shoulder and neck along with shoulder have been tight for awhile and I work at a computer 8 hours a day and barely get up. I have some pressure on my head too. Can this be the muscles being overworked ? I'm prettified and freaking myself out and googling. My bp was up earlier but I know it's from my anxiety as I was at the dentist. I can't stop this fear of pure dread lately either, and my depersonalization is acting up . I stopped my Prozac but started it again this is insane . I have been having a cough and sinuses feel weird so I'm thinking maybe the warm mess can be from that like a sinus infection ? I don't know . I hate this.