I quit smoking cigarettes around two months ago. I dealt well with the physical symptoms of withdrawal, along with the emotional symptoms, as far as I could tell. I felt I could safely say that I had "quit" smoking. But recently, around two weeks ago, I began having strong irrational fears, mostly concerning my health. I was extremely afraid of dying. Even under normal circumstances, it's not a comfortable subject for me, but recently its become almost an obsession. I'm not depressed, and although I have been diagnosed with Social Anxiety Disorder I've been able to live pretty normally. But with this desperate fear, I haven't been able to sleep, or to really think about anything else. I've had to return to smoking, despite not really wanting to. I feel almost normal again. Is there any known tie between quitting smoking and severe anxiety and panic attacks? I really would love to quit smoking, but find myself unable to. If anyone has any information, it would be very appreciated. Thank you.