Cluster Headache - Concise listing of clinical features and management. neuroland.com/ha/cluster.htm
Cluster Headache FAQ - Frequently Asked Questions from the Michigan Head Pain And Neurological Institute. www.mhni.com/faqs_cluster.html
Cluster Headache Help - Resources, questionnaires and links for those affected with the disorder. www.chhelp.org
Cluster Headache Pain Relief - Provides information on an alternative treatment for cluster headaches using an electro-acupuncture device. www.bodyclock.net/conditions/cluster-headache.html
Diagnosis of Cluster Headache - Broad outlines on diagnostic criteria from the State University of New York. www.upstate.edu/neurology/haas/hpcldx.htm
Organization for Understanding Cluster Headaches - Information about OUCH and its activities. Includes a quiz, medical information, comparison table and the International Headache Society diagnostic criteria. www.clusterheadaches.org
OUCH (UK) - Organization dedicated to helping sufferers and those researching into cluster headaches. www.clusterheadaches.org.uk
