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Cluster Headaches Learning Center
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A cluster headache is one-sided head pain that may involve tearing of the eyes and a stuffy nose. The headaches occur repeatedly every day at the same time for several weeks and then go away. See also: Headache; Migraine headache; Tension headache.
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Cluster headaches are characterized by an intense one-sided pain centered by the eye or temple. The pain lasts for one to two hours on average and may recur several times in a day.
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