frontal lobe syndrome, behavioral and personality changes usually observed after a neoplastic or traumatic frontal lobe lesion. The patient may become sociopathic, boastful, hypomanic, uninhibited, exhibitionistic, and subject to outbursts of irritability or violence. In other cases the person may become depressed, apathetic, lacking in initiative, negligent about personal appearance, and inclined to perseverate. Partial frontal lobectomy was formerly performed by some psychosurgeons to reduce drive in extremely disturbed psychotic patients, but the results were highly questionable.
