[The little known Fay syndrome (benign carotidynia)].

The authors describe the little known Fay syndrome (benign carotidynia, extracranial vascular cephalea). They emphasize the importance of a careful case-history (in particular sore throat--usually unilateral), with careful physical examination (palpation sensitivity of the carotid artery beneath the bifurcation). The authors assume that the syndrome is not as rare but that it is rarely correctly diagnosed.