[Polyneuritis of cranial nerves and acquired immunodeficiency syndrome (AIDS): 5 cases].

Cranial neuropathies were present in 5 patients with positive serology for the human immunodeficiency virus. Two patients presented with abnormalities of ocular movements (3rd, 4th), two with an isolated unilateral facial nerve palsy and one with a lesion of the accessory nerve. Neurological symptoms and signs are present in approximately 60 to 80 p. 100 of cases of the acquired immunodeficiency syndrome, but cranial neuropathies affect only 2 to 3 p. 100 of the patients. The isolation of the human immunodeficiency virus from the nerve suggest a direct role, but an indirect immune mechanism may also be present. Some of the patients with aseptic meningitis or subacute encephalopathy have demonstrated involvement of cranial nerves, mainly 2nd, 7th and 8th. Systemic tumors (lymphoma) may involve the central nervous system by diffuse meningeal invasion with lesions of 3rd, 4th and 6th nerves. Opportunist infections like Herpes zoster or Cytomegalovirus may produce cranial neuropathies (2nd, 5th). Isolated mononeuropathies or cranial nerves palsies have also been reported in patients treated with chemotherapeutic agents like vinca alkaloids.