I've had blackouts but from what I've been told, I'm usually doing something that'll harm me and not others apparently. Prior to being diagnosed I was slipping into lala land and doing weird ****. One time I just suddenly collapsed out of the blue and was speaking gibberish for hours. I have some vague memories but most of the time my boyfriend has to fill me in. He says I was psychotic and he couldn't get through to me. And around this time I was the same as you, panic attack over everything. Being outside in the city was terrifying.

I'm pretty sure I haven't had a black out episodes since getting on meds so far... at least no one has mention anything that I can't recall happening. :/