title: No Laughing Matter: Gelastic Migraine and Other Unusual Headache Syndromes.
abstract: Primary and secondary headache disorders have established diagnostic criteria in the International Classification of Headache Disorders IIIb, as well as classic findings, which although not part of the formal criteria are often suggestive of a particular diagnosis. At times, headache disorders can involve unusual symptoms that lack an identifiable secondary cause. This review will discuss some of these unusual symptoms, including headache associated auditory and olfactory symptoms, as well as two case reports involving gelastic migraine and migrainous thoracalgia.
authors.affiliation: John R. Graham Headache Center, Department of Neurology, Brigham and Women's Hospital, 1153 Centre Street, Suite 4970, Boston, MA, 02130, USA. PMATHEW@partners.org.|Department of Neurology, Harvard Vanguard Medical Associates, Braintree, MA, USA. PMATHEW@partners.org.|Division of Neurology, Cambridge Health Alliance, Cambridge, MA, USA. PMATHEW@partners.org.|Harvard Medical School, Boston, MA, USA. PMATHEW@partners.org.
authors.forename: Paul G
authors.initials: PG
authors.lastname: Mathew
authors.affiliation: Department of Neurology, Mayo Clinic College of Medicine, Rochester, MN, USA.
authors.forename: Carrie E
authors.initials: CE
authors.lastname: Robertson
mesh_terms: D000328:Adult; D001309:Auditory Threshold / Q000502:physiology*; D001921:Brain / Q000503:physiopathology; D005260:Female; D006261:Headache / Q000175:diagnosis / Q000503:physiopathology*; D020773:Headache Disorders / Q000175:diagnosis / Q000503:physiopathology*; D051271:Headache Disorders, Secondary / Q000175:diagnosis / Q000503:physiopathology*; D006801:Humans; D008881:Migraine Disorders / Q000175:diagnosis / Q000503:physiopathology*
keywords: Auditory hallucinations; Gelastic epilepsy; Gelastic migraine; Migraine equivalents; Migrainous thoracalgia; Olfactory hallucinations; Tinnitus