If you describe someone as manic, you mean that they do things extremely quickly or energetically, often because they are very excited or anxious about something.
1. affected with or marked by frenzy or mania uncontrolled by reason;
"a frenzied attack""a frenzied mob""the prosecutor's frenzied denunciation of the accused"- H.W.Carter"outbursts of drunken violence and manic activity and creativity"