Avoiding these triggers can be as simple as wearing a hat and sunglasses when you're outside, or ingesting some medication or caffeine just before your period, Beck said.
And then there are signs that a headache might be indicative of a more serious medical condition, such as a tumor or aneurysm, Beck said. Red flags include:
"These dangerous headaches are rare, but we physicians want to be able to identify them as soon as possible," Beck said. "If there's something that worries you, it's better to see your physician."
Diamond agrees. "If you're getting more than three or four headaches a week, or you're taking excessive amounts of analgesics on a daily or almost daily basis, you should seek out care," he said.
The American Academy of Family physicians has more about headache symptoms and diagnosis.
For more on living with migraines, read about one woman's story.
SOURCES: Ellen Beck, M.D., family physician, San Diego, and clinical professor, division of family and preventative medicine, University of California, San Diego; Seymour Diamond, M.D., director and founder, Diamond Headache Clinic, director, inpatient headache unit, Saint Joseph Hospital, Chicago, and clinical professor, family medicine, Chicago Medical School, Rosalind Franklin University of Medicine and Science, Chicago
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