[Primary mixed unilateral algias (author's transl)].

Usually trigeminal neuralgia or tic douloureux and migrainous neuralgia or cluster headache are sharply opposed. But some rare cases of mixed facial unilateral algias associating both mechanisms are possible. Here is studied a series of 12 cases. One may distinguish: 1. one neuralgic vascular type. It starts by lightning and triggered hemifacial pain followed by tenderness and vaso-secretory phenomenous of same topography; 2. the second is of vascular-neuralgic type. It starts like common cluster headache; the lightning pain occuring in the end of paroxysm. Only the first type -- neuralgic vascular -- is reactive to chimiotherapy (carbamazepine) or local antinevralgic procedures (thermocoagulation).