When do common symptoms indicate normal pressure hydrocephalus?

The Adams triad (gait impairment, dementia, and urinary incontinence) of normal pressure hydrocephalus (NPH) is well known, but other illnesses present with similar symptoms. Accurate diagnosis of this rare disorder depends on careful evaluation. A ventriculoperitoneal shunt is the only effective therapy, and deciding whether the patient will benefit is the final challenge in the evaluation process.