Ask the doctor: What can I do for antidepressant “discontinuation symptoms”?

I took a low dose of the antidepressant desipramine for more than two years for chronic pain. Once I started physical therapy, my pain improved so much that I quickly tapered off the medication. I have been off of it for a month now, but am still experiencing ?discontinuation symptoms.? I can?t sleep well and feel a little dizzy. What can I do for this?