Classification of cluster headaches

There are 2 types of cluster headaches:

  • Episodic cluster headaches are the most common type of cluster headaches. People with episodic cluster headaches have cluster periods of 1 to 3 months when they are prone to having headaches. The cluster periods are followed by headache-free periods (remissions) of 6 months or more. About 90% of people who have cluster headaches have episodic cluster headaches.1
  • Chronic cluster headaches are those that occur during a period of at least 12 months without a headache-free period (remission) or when remissions last less than one month.2 About 10% of people who have cluster headaches have chronic cluster headaches.3

Citations

  1. Cutrer FM, Moskowitz MA (2008). Headaches and other head pain. In L Goldman, D Ausiello, eds., Cecil Medicine, 23rd ed, pp. 2639–2646. Philadelphia: Saunders.
  2. Headache Classification Subcommittee of the International Headache Society (2004). International classification of headache disorders: 2nd ed. Cephalalgia, 24(Suppl 1): 9–160.
  3. Evans RW (2006). Headache. In DC Dale, DD Federman, eds., ACP Medicine, section 11, chap. 8. New York: WebMD.

Last Updated: April 11, 2008

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