Short-lived crazes

• Fevers that quickly cool
• PokГ©mon and the Beatles, once
• Pet Rocks and Beanie Babies, etc., once
• Widespread rages
• States of unreason
• PokГ©mon and pet rocks, e.g.
• They're all the rage
• Rages
• Pokemon Go and the like

Wiktionary Word definitions in Wiktionary
n. (plural of mania English)