forgot to answer ....

Do you mean decide to do something as in see someone for having bipolar?

In my case, Id had episodes previously, but it wasn't until I went wandering in a derealization and depersonalization state and hallucinating people who "disappeared" that I went to my GP. I was then diagnosed with premenstrual dysphoric disorder and put on celexa, an antidepressant. This threw me into mania. I got a new pdoc and eventually was diagnosed. But my other pdoc six months earlier knew full well I was having horrid hallucinations and still put me on celexa! it's not easy getting diagnosed.