R B Lipton1, M E Bigal, T J Steiner
1Department of Neurology, Albert Einstein College of Medicine, Bronx, NY 10461-1926, USA. rlipton@aecom.yu.edu
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The International Classification of Headache Disorders (ICHD) provides updated criteria for diagnosing primary and secondary headaches. Neurologists should review the revised 2004 guidelines for improved headache management and classification.
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