Cluster Headache (CH)

Cluster headaches are rare, extremely painful and debilitating headaches occurring in clusters. There is piercing pain near one eye or temple lasting for 15 minutes to 3 hours. The headaches are usually unilateral and occasionally change sides; the pain of cluster headaches is far worse, significantly more severe than a migraine. Cluster headaches are frequently associated with Horner's syndrome, ptosis, conjunctival injection, lacrimation, miosis, and rhinorrhea.


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