[Trigemino-autonomic cephalalgias. Report of two cases].

: Trigemino-autonomic cephalalgias (TAC) constitute a rare group of primary headache conditions associated with unilateral fluctuating head pain and autonomic symptoms. These syndromes, including cluster headache, hemicrania continua, paroxysmal hemicrania and SUNCT, are much less prevalent than migraine and tension-type headache. The pathogenesis of TAC is unknown. Similar neuropeptide changes seen in all TAC syndromes suggest a shared underlying pathophysiology in these headaches. Some of them respond to the treatment with indomethacin and sumatriptan. Two patients suffering from one of the trigemino-autonomic cephalalgias are presented in the paper.