Propylthiouracil and peripheral neuropathy.

Peripheral neuropathy is a rare manifestation in hyperthyroidism. We describe the neurological manifestations of a 38 year old female with Graves' disease who developed peripheral neuropathy in the course of her treatment with propylthiouracil. After the drug was tapered off, the neurological signs disappeared.

[Isolated vasculitis of the central nervous system and involvement of the 8th cranial nerve: rare manifestations of acquired immunodeficiency syndrome].

The authors report the case of an AIDS patient with rare neurologic manifestations: primary vasculitis of the central nervous system and VIII cranial nerve dysfunction. The authors make a review on the subject, and call special attention for the differential diagnosis. In fact, the patient, a 36 year old woman, with promiscuous life, presented with dizziness, gait ataxia, nausea, headache and hypoacusia.

[An unusual association: polymyositis, myasthenia gravis and thymoma].

Based on the inexistence of references in Brazilian and International literature of the association polymyositis, myasthenia gravis and thymoma in a young male adult, the authors propose to describe one case presenting the associated syndrome. The disease began when the patient was 22 years old, being the climax of its clinical expression four years later. It is emphasized the difficulty on the differential diagnosis between polymyositis and myasthenia gravis, once these diseases frequently have their clinical manifestations well individualized.