Is your headache normal or a warning sign? Neurologist explains the red flags

Headaches are so common that most of us brush them off with a glass of water or a painkiller. A long day, skipped meals, screens, stress, it’s easy to assume the cause is harmless every single time. But experts say that while most headaches are routine, some can be the body’s earliest and most important warning signal. The trouble is: we often don’t know how to tell the difference.

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