To the Editor: The 2 April issue of the Journal contained several articles on pain, but no mention of patients who suffer with head pain. Headache is one of the commonest acute and chronic pain conditions. Studies have shown that episodic migraine affects 18% of women and 8% of men.1 Daily headache afflicts 4% of people worldwide, and half have chronic migraine.2 According to data from the World Health Organization, migraine ranks eighth in the global burden of disability resulting from mental, neurological and substance-use disorders.3
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