What is the meaning of cluster headache?

noun

  • A painful recurring headache associated with the release of histamine from cells.
WordNet 3.0 © 2006 by Princeton University
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APAWordNet. (2010). cluster headache. Retrieved September 21, 2026, from http://smartdefine.org/cluster_headache/definitions/1266173
ChicagoWordNet. 2010. "cluster headache" http://smartdefine.org/cluster_headache/definitions/1266173 (accessed September 21, 2026).
HarvardWordNet 2010, cluster headache, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/cluster_headache/definitions/1266173>.
MLAWordNet. "cluster headache" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/cluster_headache/definitions/1266173>