[Paralysis of the IIIrd cranial nerve. Pain and its value in the differential diagnosis (author's transl)].

Eighteen cases of paralysis of the IIIrd cranial nerve are studied, 9 of which were of ischemic origin (diabetes, hypertension or arteriosclerosis), and 9 secondary to aneurysm of the posterior communicating artery. Seven patients from the first group and all of the second suffered from headaches. This study deals essentially with the associated painful symptom, its localisation, its nature and its value in the differential diagnosis of the two conditions.