What rare form of headache whose name refers to its tendency to occur periodically has been called by some experts as the most painful condition known to medical science?
Migrainous neuralgia Suicide headache Cluster Headache Cluster headache Alarm clock headache Cluster headache treatments Horton's syndrome Horton headache Cluster Headaches and LS Pito-Pito Headache, cluster Suicide headaches Migraine neuralgia Cluster Headaches Horton's headache Cluster headaches
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cluster headache
WikipediaEntity
Cluster headache