Edited by J Olesen, T J Steiner, R B Lipton. Published by Oxford University Press, Oxford, 2003, pp 409, £85.00. ISBN 0-19-851589-8

It is now becoming clear that the physical effects of traditional neurological diseases, such as multiple sclerosis, Parkinson’s disease, and motor neurone disease, are the tip of an iceberg of neurological disability. Headache, with its meagre crop of hard physical signs and radiological abnormalities, accounts for a large proportion of, …