I have been on SSRI's for several years now. I believe originally for mood imbalance. Anyway, I weened myself off paxil and started having some nasty anxiety. That was 2 months ago. After feeling horribly depressed, lethargic, EXTREME fatigue, dizzy, panic attacks, inability to concentrate, and what can best be described as brain fog. I tried going back on paxil but it was not effective. I started seeing a therapist and psyc. They believe it is depression with anxiety, and that I should start a new low dose ssri (which I did starting last night-zoloft 12.5mg). I have done alot of research and am finding that alot of people are having paxil w/d for up to and over a year. With depression and w/d symptoms so similar, how can you tell which is which? Thank you for your time.