i was addicted to a certain drug for a little over a year. A few years later i was diagnosed bipolar II, and told that i may have had a predisposition to it before the drugs, but the drugs actually caused it ? However i have had manic or hypo-manic episodes (not sure which) but there have been some psychotic features for example i used to stare at light bulbs because the electric current looked like a mouth...and i thought they were sending me messages...well..talking but no sound. Oddly enough anti-depressants actually trigger at least hypo mania for me anyways.