Don't know teejai, you describe it as a "depressive patch" and I found this: "Antidepressants are not indicated for acute milder depressions at initial presentation" here: http://www.bap.org.uk/consensus/antidepressants.html Maybe the depression wasn't bad enough to look like it would warrant using an AD? If you have a PD, that would be of a "difference" from depression maybe along the lines of how bipolar is different and since they were closer to your old bipolar dx, maybe they were worried about giving it up that soon and sort of clung to it since they didn't have another clue yet?