caffeinism

American  

[ka-fee-niz-uhm, kaf-ee-niz-, kaf-ee-uh-] / kæˈfi nɪz əm, ˈkæf iˌnɪz-, ˈkæf i ə- /

noun

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

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Etymology

Origin of caffeinism

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