caffeinism

[ ka-fee-niz-uhm, kaf-ee-niz-, kaf-ee-uh- ]

noun

1. chronic toxicity caused by excessive intake of caffeine, characterized by anxiety, irritability, palpitations, insomnia, and digestive disturbances.

Word History and Origins

Origin of caffeinism¹

First recorded in 1885–90; caffeine + -ism

Example Sentences

If you ingest too much of it, you can get what’s called caffeinism: jitters and tremor.

From Washington Post

But overuse can develop into "caffeinism," which may cause muscle twitching, insomnia, headaches and heart palpitations.

From Forbes