Normal pressure hydrocephalus (NPH), typically associated with the triad of gait disturbance, dementia and urinary incontinence, rarely presents with symptoms of mania, depression or psychosis and psychiatric disorders may complicate the diagnosis. Few cases of NPH and psychiatric disease comorbidity have been reported so far. In most of these cases, NPH was associated with depression and psychotic symptoms. Mania symptoms were also reported in a few cases those of which were associated with a history of bipolar disorder (BPD) or subthreshold BPD symptoms. In this paper, we present a case of late-onset mania symptoms simultaneously presenting with NPH in a healthy individual without a history of psychiatric disorder.