[Etiological factors in the trigeminal neuralgia syndrome].

Trigeminal neuralgia (TN) accompanies brain tumors, multiple sclerosis and vascular compression of the root of the trigeminal nerve. Among 80 TN examinees, multiple sclerosis, cerebellopontile angle tumors, compression of the root of the trigeminal nerve by arterial and venous vessels were diagnosed in 2.5 and 73 patients, respectively. CT or NMR tomography allows differential diagnosis of TN. The knowledge of the etiological factors provides the choice of adequate conservative or microsurgical treatment policy.