A review of nonvalidated and complementary therapies for cluster headache.

Cluster headache is arguably the most disabling form of primary headache. There is a great deal of information available about alternative therapy for migraine, but very little regarding alternative therapy for cluster headaches. This article reviews the popular and scientific print and electronic sources of information about alternative and complementary treatments for cluster headache dietary supplements, herbal modalities, folk remedies, physical and manual therapies, and unlabeled use of prescription drugs such as botulinum toxin, baclofen, and methylphenidate.