I have started having intense fear of somebody or something watching me, following me, and an intense fear of the dark.  It started about 6 months ago and has increased tremendously in the last couple of week.  I went off Cymbalta which I had been on for a few years for depression and started talking Amitriptyline four nights ago.  I had to go off cymbalta because of suicidal thoughts and my depression becoming out of control.  I am diagnosed with an anxiety disorder and major deppressive disorder along with health problems such as fibromyalgia and arthritis.  So these new symptoms are very concerning to me, plus affecting my life negatively.  Along with them I am agitated one day and cussing people out and crying like a baby the next.  I really think I am going crazy.
HI, thanks for using Chat Doctor It would be best for you to urgently seek the help of your psychiatrist. The intense fear of being watched or followed, implies the development of paranoid symptoms. These thoughts can lead to harm to yourself or someone else. This requires additional therapy to what you are currently using. The amitriptyline would not treat these new symptoms. I hope you receive the help you need