What are the signs and symptoms 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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Attacks of cluster headache (CH) are typically short and occur with a clear periodicity, particularly during sleep or early morning hours, usually corresponding with onset of rapid eye movement (REM) sleep. [5, 9] Unlike migraine, CH is not preceded by aura and is not usually accompanied by symptoms such as nausea, vomiting, photophobia, or osmophobia. Typically, a patient experiences 1-2 cluster periods per year, each lasting 2 weeks to 3 months.

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