A 59-year-old woman developed episodes of right facial and arm movements. Investigations revealed a right frontotemporal tumor. Three years later she developed unusual spontaneous psychomotor symptoms and bizarre behavior which could be induced and terminated by suggestion. Neuropsychological and electroencephalogram studies showed right frontotemporal dysfunction, but no epileptiform activity. Previous psychiatric history was unremarkable. We propose that this unusual constellation of symptoms was induced by a combination of primary effects of the tumor and a secondary psychological reaction.