Normal pressure hydrocephalus (NPH) in elderly patients is reviewed. Since the clinical signs that characterize NPH—in— continence, difficulty walking, and dementia—occur frequently in the elderly in association with a wide variety of disorders, attention is paid to the differential diagnosis of NPH on the basis of both clinical findings and laboratory tests. Success rates for treatment of NPH using surgical shunting are discussed, as are mortality rates and complication rates for this type of surgery in the elderly. Factors that may be of value in predicting which NPH patients are most likely to benefit from surgical intervention are reviewed, and the need for the development of pharmacological alternatives to surgery for elderly NPH patients is emphasized. As one of the most treatable causes of dementia in the elderly, NPH should be considered in the diagnosis of demented elderly patients with incontinence and gait disturbances, and it merits further research. (J Geriatr Psychiatry Neurol 1988;1:163-168)
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