An acute syndrome with psychiatric symptoms and EEG abnormalities

Abstract
Four patients with abrupt onset of psychosis had prominent periodic EEG abnormalities with diffuse sharp waves. Other laboratory studies, including CSF and CT, were normal. The EEG abnormalities disappeared within 1 to 7 days. Clinical improvement was complete and commenced after the EEG showed improvement. The cause remains obscure, but it seems to be a transient organic disturbance of cerebral function that must be distinguished from primary psychiatric disorders.

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