Migraine headaches are familiar and generally treatableailments. Less understood are migraine auras or scotoma, visualdistortions—sometimes accompanied by headache and sometimesnot—that make it difficult, sometimes impossible, to see clearly.Migraine auras can be frightening, disorienting, evenincapacitating. Richard Grossinger, who has suffered from themhimself, here presents a helpful guide to the subject that maps theterrain, describes the various forms migraine auras can take,charts his personal experiences with them, and offers informedsuggestions for homeopathic and other treatments.