Lol, I've always have had vivid and bizarre dreams. Sometimes I'll look up dream interpretations online to see what in the dream may signified. Maybe mania could mean something else entirely. I've looked up mania and found maniac which said this:
Maniac
To dream that you are a maniac indicates that you need to control your temper and not let your emotions get the best of you. You need to show more restraint and composure in some situation.