Cluster Headache Definition
 klŭstər 
    noun
  
 A type of recurrent headache characterized by sudden onset and intense pain on one side of the face near the eye.
 Webster's New World 
(pathology) An extremely painful, cyclical and unilateral headache.
Wiktionary 
Synonyms: 
  
- histamine headache
Other Word Forms of Cluster Headache
Noun
Singular:
 cluster headachePlural:
 cluster-headachesRelated Articles
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