Methacholine induced headache.
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.
Carratala
C
C
Department of Pneumology, Hospital del Mar, IMIM Universitat Autònoma de Barcelona, Spain.
Gea
J G
JG
Aguar
M C
MC
Grau
S
S
Espadaler-Medina
J M
JM
Broquetas
J M
JM
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*
D016210:Methacholine Chloride