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Hemicrania Continua with Contralateral Episodic Cluster Headache: A Case Report

The trigeminal autonomic cephalgias (TACs) are characterized by short-lasting unilateral headaches with autonomic features (1). They include four headache disorders, cluster headache (CH), paroxysmal hemicrania (PH), SUNCT syndrome and hemicrania continua (HC). The coexistence of different ipsilateral TACs in the same patient has been previously reported in six published cases (2-6). In five of these patients an association of CH and PH was noted (2-5). The two varieties of attacks occurred separately in three patients, while their simultaneous occurrence was observed in two cases. In another patient the successive occurrence of trigeminal neuralgia, SUNCT syndrome, PH and CH in one active headache period was noted (6). All the reported cases concerned male patients. We describe what we believe to be the first case of coexistence of two different contralateral TACs.