Caffeinism Definition

kă-fēnĭzəm, kăfē-, kăfē-ə-
noun
A toxic condition marked by diarrhea, elevated blood pressure, rapid breathing, heart palpitations, and insomnia, caused by excessive ingestion of coffee and other caffeine-containing substances.
American Heritage Medicine

Addiction to such beverages.

Wiktionary
Synonyms:
  • caffeine intoxication