My girlfriend was on celexa for a few months and one day she decided to stop taking it all together. After a couple weeks she began acting EXTREMELY manic. Shes been crying all the time, showing disinterest in her family, dropped out of school and could care less about normal every day activity. Is this behavior usual for people who stop taking celexa? I've never seen her like this and I've known her for years. To me this is very unusual.