What is the efficacy of high-flow concentrated oxygen in the treatment of cluster headache (CH)?

Updated: Jun 07, 2019
  • Author: Michelle Blanda, MD; Chief Editor: Tarakad S Ramachandran, MBBS, MBA, MPH, FAAN, FACP, FAHA, FRCP, FRCPC, FRS, LRCP, MRCP, MRCS  more...
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Inhalation of high-flow concentrated oxygen is extremely effective for aborting CH attacks, though the precise mechanism of action is poorly understood. Oxygen is an effective alternative to ergotamine. Despite the immediate availability of oxygen in the emergency department, its widespread use in outpatient setting is impractical.

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