title: Long-term evolution of a laughing headache associated with Chiari type 1 malformation.
abstract: We describe an acute-onset, sharp, short-lasting (few seconds) headache at the vertex, that first occurred 10 years ago in a 44-year-old woman. Attacks were triggered by vigorous laughing. A magnetic resonance imaging study showed a Chiari type 1 malformation. To our knowledge, laugh-induced headache with long-term evolution in association with Chiari type 1 malformation has not been previously reported.
authors.affiliation: Servicio de Neurología, Hospital Clínico Universitario, Zaragoza, Spain.
authors.forename: F
authors.initials: F
authors.lastname: Morales-Asín
authors.forename: J A
authors.initials: JA
authors.lastname: Mauri
authors.forename: C
authors.initials: C
authors.lastname: Iñiguez
authors.forename: M P
authors.initials: MP
authors.lastname: Larrode
authors.forename: E
authors.initials: E
authors.lastname: Mostacero
mesh_terms: D000328:Adult; D001139:Arnold-Chiari Malformation / Q000150:complications*; D005260:Female; D006261:Headache / Q000209:etiology*; D006801:Humans; D007845:Laughter