I started of with a diagnosis of MDD in my teens. When I was in my early 20s, I was finally ready to try medications, after having scripts I'd never filled. I was prescribed Celexa and within days of starting it felt euphoric. Within a couple of weeks, I felt depressed again so we increased the dose. Within a few days, I felt good again. Then the depression returned again. We increased the dose again and I started ultra-rapid cycling, sometimes a day or two between suicidal and euphoric, sometimes less. I called my pdoc in a panic, feeling out of control. We decided to stop the antidepressant and add a mood stabilizer. This lead to my diagnosis. I have since had episodes not triggered by medication, though treatment still sometimes triggers them.