title: Methacholine induced headache.
abstract: A lung function technician developed episodes of headache, probably related to the use of methacholine. The headache disappeared with breathing 100% oxygen. Cholinergic agents are known to induce headaches but the mechanism remains unclear. Vascular factors could be implicated.
authors.affiliation: Department of Pneumology, Hospital del Mar, IMIM Universitat Autònoma de Barcelona, Spain.
authors.forename: C
authors.initials: C
authors.lastname: Carratala
authors.forename: J G
authors.initials: JG
authors.lastname: Gea
authors.forename: M C
authors.initials: MC
authors.lastname: Aguar
authors.forename: S
authors.initials: S
authors.lastname: Grau
authors.forename: J M
authors.initials: JM
authors.lastname: Espadaler-Medina
authors.forename: J M
authors.initials: JM
authors.lastname: Broquetas
mesh_terms: D000328:Adult; D000488:Allied Health Personnel; D001985:Bronchial Provocation Tests; D005260:Female; D006261:Headache / Q000139:chemically induced*; D006801:Humans; D016210:Methacholine Chloride / Q000009:adverse effects*; D009784:Occupational Diseases / Q000139:chemically induced*; D016273:Occupational Exposure / Q000009:adverse effects*
chemical_list: D016210:Methacholine Chloride