title: [Laughing headache].
authors.affiliation: Secretaria Municipal de Salud de Curitiba, Curitiba, Brasil.
authors.forename: Carlos
authors.initials: C
authors.lastname: Arteaga-Rodriguez
authors.affiliation: Secretaria Municipal de Salud de Curitiba, Curitiba, Brasil.
authors.forename: Viviane
authors.initials: V
authors.lastname: Alves
authors.affiliation: Secretaria Municipal de Salud de Curitiba, Curitiba, Brasil.
authors.forename: Rodrigo
authors.initials: R
authors.lastname: de Oliveira
mesh_terms: D006261:Headache / Q000209:etiology*; D006801:Humans; D007845:Laughter / Q000502:physiology; D008297:Male; D008875:Middle Aged; D059906:Neuroimaging