Signs and Symptoms of Caffeine Intoxication or Abuse

nervousness headache increased heart rate

anxiety upset stomach irregular heartbeat

irritability GI irritation elevated blood pressure

agitation heartburn increased cholesterol

tremors diarrhea nutritional deficiencies

insomnia fatigue poor concentration

depression dizziness bed wetting.

Caffeine Withdrawal Symptoms

headache constipation runny nose

craving anxiety nausea

irritability nervousness vomiting

insomnia shakiness cramps

fatigue dizziness ringing in the ears

depression drowsiness feeling hot and cold

apathy inability to concentrate

The most common withdrawal symptom is a throbbing and/or pressure headache, usually located at the temples but occasionally at the back of the head or around the eyes. A vague muscular headache often follows. Of course, caffeine cures the symptom; but this is not the answer.