Am 04.11.2016 um 22:34 schrieb Nkansah Rexford:
> Mania: "mental illness marked by
periods of great excitement, euphoria,
> delusions, and overactivity."
Second meaning: "extreme enthusiasm
for something that is usually shared by many
people". --
http://www.merriam-webster.com/dictionary/mania
Sounds about right to me...