A primary headache disorder that is characterized by severe, strictly unilateral PAIN which is orbital, supraorbital, temporal or in any combination of these sites, lasting 15-180 min. occurring 1 to 8 times a day. The attacks are associated with one or more of the following, all of which are ipsilateral: conjunctival injection, lacrimation, nasal congestion, rhinorrhea, facial SWEATING, eyelid EDEMA, and miosis. (International Classification of Headache Disorders, 2nd ed. Cephalalgia 2004: suppl 1)
Also Known As:
Cluster Headaches; Headaches, Cluster; Cluster Headache Syndrome; Syndrome, Horton; Headache, Cluster; Atypical Cluster Headache; Chronic Cluster Headache; Episodic Cluster Headache; Horton's Syndrome; Atypical Cluster Headaches; Cephalgia, Histamine; Cephalgias, Histamine; Chronic Cluster Headaches; Ciliary Neuralgias; Cluster Headache Syndromes; Cluster Headache, Atypical; Cluster Headache, Chronic; Cluster Headache, Episodic; Cluster Headaches, Atypical; Cluster Headaches, Chronic; Cluster Headaches, Episodic; Episodic Cluster Headaches; Headache Syndrome, Cluster; Headache Syndromes, Cluster; Headache, Atypical Cluster; Headache, Chronic Cluster; Headache, Episodic Cluster; Headaches, Atypical Cluster; Headaches, Chronic Cluster; Headaches, Episodic Cluster; Histamine Cephalgias; Hortons Syndrome; Migraine, Neuralgic; Migraines, Neuralgic; Neuralgia, Ciliary; Neuralgias, Ciliary; Neuralgic Migraines; Syndrome, Cluster Headache; Syndrome, Horton's; Syndromes, Cluster Headache; Ciliary Neuralgia; Histamine Cephalgia; Horton Syndrome; Neuralgic Migraine