anxiety
"I started taking paroxetine about 5 years ago because I was lasting 2 mins in bed with my gf.  I never had that problem before but it was happening all the time.  My doctor told me I had anxiety and put me on paroxetine. Since then I have felt great and never looked back. The premature ejaculation went and I felt much better. I had always had negative panicky feelings but just thought it was normal and everyone felt like this but since starting it I have felt great.  It can be hard if you just stop the side affects are pretty bad but I am happy to keep on taking it because it works for me....hope this was helpful ;)"