Epidemiology and impact of headache: an overview.

Smith, Timothy R · Prim Care · 2004

review · Level V

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Abstract

Headache is one of the most common presenting complaints of patients in the practice of medicine. Frequently a symptom of numerous diseases, and frustratingly, the principle symptom of the primary headache syndromes, headache is experienced by 90% of the general population at some point in life.

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