Web sites for headache vary tremendously in their usefulness to physician and patient. There are those set up by national and international organisations aimed at the clinician and concerned with the structure and organisation of the relevant organisation and management issues. These include the site for the British Association for the Study of Headache (BASH) (http://www.bash.org.uk/), the most useful section of which is probably the British migraine management guidelines. The US equivalent, the site of the American Headache Society (http://www.ahsnet.org/), is more comprehensive with links to useful topics on migraine management. The International Headache Society site (http://www.i-h-s.org/) is aimed particularly at those in clinical headache research with guidelines for drug trials and notice of meetings, but does have some sections of practical …