Worst Headache of Your Life Topic Guide
Worst Headache of Your Life: The worst headache of your life may be a life-threatening emergency. Symptoms such as a headache with fever and a stiff neck, a headache that starts with a thundeclap, a headache following a head injury, a headache with loss of vision or numbness of the arms or legs, or a headache with a fever (not caused by the flu) are emergent medical conditions. Treatment of the worst headache of your life depends on the cause of the headache.
Carbon Monoxide Poisoning Carbon monoxide (CO) is a colorless, odorless gas produced by burning material containing carbon. Carbon monoxide kills nearly 400 people each year in the U.S. Early symptoms of carbon monoxide poisoning are headache, nausea, fatigue, and are often mistaken for the flu. If a person suspects they have been exposed to carbon monoxide poison, seek medical care emergently.
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