Medical Dictionary

caffeinism

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noun caf·fein·ism \-ˌiz-əm\

Medical Definition of caffeinism

  1. :  an abnormal condition caused by the consumption of large amounts of caffeine and marked by restlessness, nervousness, irritability, insomnia, diuresis, tremors, and tachycardia In general, more than 1.5 grams of caffeine a day can cause the typical symptoms of caffeinism: anxiety, insomnia, irritability and palpitations.—Richard A. Friedman, The New York Times, 6 Apr. 2004 I ran in to find her pale, in a cold sweat, with her heart racing. She had had four cups of coffee in two hours and was suffering from caffeinism.—People Weekly, 10 Sept. 1984


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