IMO, there's not a single overlay of symptoms that apply to every single person. For me, I get a rush of creativity and a need to do new things. I talk a lot, get animated with language and expressions, and my mind goes into general overdrive.

The problem comes with the crash. I get angry and paranoid. The most troubling aspect is controlling the *when* of the downside. That's the eternal lure of BP, sort of like the Greek Sirens.