Psychotic behavior in normal pressure hydrocephalus.

Normal pressure hydrocephalus (NPH) usually presents with progressive gait impairment, urinary incontinence, and cognitive deficits. Many studies have shown that NPH can mimic other disorders like Parkinson disease with tremors and rigidity. In this report, we present our experience with three patients who had psychotic behavior and were treated with psychiatric medications but were subsequently investigated and found to have NPH. After lumboperitoneal shunting, all the three became normal and were even able to stop the psychiatric medications completely. The message is that NPH can mimic a psychiatric disorder and awareness about this well treatable condition is important especially among the psychiatrists and geriatricians.