Cytomegalovirus infection of the adult nervous system

In 2 patients, 1 with brachial plexus neuropathy and another with relapsing chronic encephalitis, the acute neurological syndrome was accompanied by fever, tachycardia, abnormal liver function, and atypical lymphocytosis. Cytomegalovirus (CMV) infection was documented in both patients by viral isolation and a fourfold rise in complement‐fixation titer. CMV may produce peripheral neuropathy, brachial plexus neuropathy, or an acute or chronic meningoencephalitis in previously healthy adults without immune deficiency.