The MediFocus Guidebook on Cluster Headache is the most comprehensive, up-to-date source of information available. You will get answers to your questions, including risk factors of Cluster Headache, standard and alternative treatment options, leading doctors, hospitals and medical centers that specialize in Cluster Headache, results of the latest clinical trials, support groups and additional resources, and promising new treatments on the horizon. This one of a kind Guidebook offers answers to your critical health questions including the latest treatments, clinical trials, and expert research; high quality, professional level information you can trust and understand culled from the latest peer-reviewed journals; and a unique resource to find leading experts, institutions, and support organizations including contact information and hyperlinks. This Guidebook was updated on August 9, 2010.