It doesn't have to. There is research claiming that if diagnosed young, you can "outgrow" the disorder.

Or you simply learn to cope better with being *you*. You come to better place in your life.

I do think episodes leave impact, but rather on soul on brain... you sometimes are in strange places with your mind... so it does leave an impact... do they scar brain? I don't know... all I know is that once you grasp your life into your hands... chances are it's gonna get better on all fronts. Imho, the worst about our episodes is not the chemistry processes but the real life aftermath anyways.