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Harvard Health Publishing
Pain
Headache: When to worry, what to do
Understanding what causes headaches and finding treatments to relieve the pain
Nearly everyone has had headache pain, and most of us have had it many times. A minor headache is little more than a nuisance that's relieved by an over-the-counter pain reliever, some food or coffee, or a short rest. But if your headache is severe or unusual, you might worry about stroke, a tumor, or a blood clot. Fortunately, such problems are rare. Still, you should know when a headache needs urgent care and how to control the vast majority of headaches that are not threatening to your health.
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