title: Headache.
abstract: Headache disorders are primarily managed in an outpatient setting; therefore, the authors focus on the primary headache disorders that comprise the bulk of clinical practice. Red flags for secondary headaches that may be more commonly encountered in clinic are briefly discussed.
authors.affiliation: Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King's College London, United Kingdom.
authors.forename: Amy R
authors.initials: AR
authors.lastname: Tso
authors.affiliation: NIHR-Wellcome Trust King's Clinical Research Facility, King's College Hospital, London, United Kingdom.
authors.forename: Peter J
authors.initials: PJ
authors.lastname: Goadsby
mesh_terms: D006261:Headache; D020773:Headache Disorders / Q000175:diagnosis / Q000628:therapy; D006801:Humans