Also known as: Cluster Headache, Episodic / Episodic cluster headache, not intractable / Episodic cluster headache (disorder) / Chronic cluster headache / Cluster headache syndrome, unspecified / Chronic cluster headache, not intractable / Cluster headache syndrome, unspecified, not intractable / Cluster headaches and other trigeminal autonomic cephalgias (TAC) / Headache histamine / Horton's headache / Headache vasomotor / Migrainous neuralgia / Ciliary neuralgia (finding) / Chronic cluster headache (disorder) / Cluster Headache / Cluster headache syndrome (disorder) / Headaches cluster / Cluster headaches