Essential Word Roots: It's Madness!: Mania

At one time it was assumed that there was a mental disorder known as pyromania; the pyromaniac was one with an irresistible impulse to light incendiary fires. Paul, Eden

His approach to his work goes beyond obsession — to a monomania that influences every facet of his life, in which gathering information trumps all else. New York Times (Feb 25, 2011)

She says he’s a megalomaniac and a narcissist. Seattle Times (Feb 4, 2021)

He was an inventor of new systems of composition, a pioneer of electronic music, and, in later decades, a visionary with a touch of megalomania. New York Times (Jul 19, 2013)

For a moment I’d almost forgotten the old lady with her bright eyes and her maniacal smile, the way she’d suddenly seemed possessed. The Last Olympian

And then she runs into the kitchen and starts washing the breakfast and lunch dishes like a maniac, doing them by hand and stacking them away instead of putting them into the dishwasher. Things Not Seen

One day he read in the encyclopedia about the advantages of a balanced diet, and so began his mania for vitamins, which was to last for the rest of his life. The House of the Spirits: A Novel

I knew a kleptomaniac, who got herself arrested more than once in the great shops of Paris for stealing various articles. Flammarion, Camille

I do understand that you are an egomaniac and all that matters to you is you, so I am asking this question seriously, and it is of course about you and you alone. Washington Post (Apr 13, 2020)

By his definition, those afflicted with bibliomania were obsessed with unique books such as first editions and illustrated copies. BBC (Jul 28, 2018)