Idiopathic Normal Pressure Hydrocephalus: A Review.

iNPH affects 1% to 4% of adults 65 and older and shows symptom improvement in 70% to 90% after shunt surgery.

• Why it matters: Early diagnosis is crucial because shorter symptom duration and less advanced disease are linked to better outcomes, yet neuroimaging alone does not reliably predict treatment response.
• What they did: The review summarizes clinical features, diagnostic methods including lumbar puncture, and treatment options such as CSF diversion with shunt placement in patients with iNPH.
• The result: Approximately 75% to 80% of patients experience gait improvements, while cognitive and urinary symptoms improve in 50% to 70%, highlighting the potential benefits of timely intervention.