mania

IPA: mˈeɪniʌ

Violent derangement of mind; madness; insanity.
Excessive or unreasonable desire; insane passion affecting one or many people; fanaticism.
2013-07-20, “The attack of the MOOCs”, in The Economist, volume 408, number 8845:
(psychiatry) The state of abnormally elevated or irritable mood, arousal, and/or energy levels.
(Roman mythology) The goddess of the dead and ghosts.

Examples of "mania" in Sentences

List mania is at its highest before holiday seasons: summer and winter.
Twilight mania is encompassing all aspects of our entertainment culture.
Cat mania is also becoming a business for some people, as Yoshimura-san explains.
But I also think that this off-shore drilling mania is a political propaganda adopted by McCain.
You made your fan film during the height of Matrix-mania; is that what inspired you to make the film?
OK, hopefully the thought has crossed more than my mind that this whole Obama-mania is in a word, Messianic.
Lots of "Avatar" mania is incoming starting tomorrow, so lock your browsers on MTV. com if you want to keep up with the latest.
"Obama" mania is getting attention is because he's an educated black man with the Democratic nomination for President of the United States of America.
While no doubt the abrupt fall has caught some traders with big losses, the bigger danger is a long-term mania that leads to a far bigger misallocation of capital.