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Traumatic Brain Injury and Neurovascular Disturbances · Journal article
Trauma and Emergency Medicine · August 1, 2026
A consensus or society position rather than new primary data.
This is an expert-derived clinical guidance article for emergency physicians to recognize idiopathic normal pressure hydrocephalus (iNPH) as a potentially reversible cause of neuropsychiatric symptoms in older adults. The framework integrates evidence from a 2025 placebo-controlled trial showing gait improvement after shunting and meta-analytic data on apathy (69%) and depression (30%) prevalence, but the proposed screening approach combining gait assessment with apathy screening awaits prospective validation.
Journal article. Older adults presenting to emergency department with depression, dementia, behavioral or cognitive complaints; includes shunt-dependent patients with new psychiatric symptoms.
Apathy occurs in roughly 69% and depression in about 30% of iNPH patients per recent meta-analysis A 2025 placebo-controlled NEJM trial demonstrated significant gait improvement after shunting Pooled estimate suggested modest reduction in depression scores, although confidence interval included no effect
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Emergency physicians should perform brief gait examination and screen for iNPH triad in older adults with depression or behavioral symptoms, as iNPH is a potentially reversible cause often mistaken for primary psychiatric disorder. For shunted patients presenting with anxiety or activity restriction, trauma-informed evaluation is warranted before assuming primary psychiatric diagnosis, as symptoms may reflect device-related concerns rather than psychiatric illness.
Expert-derived educational framework for emergency physicians to recognize iNPH as a neuropsychiatric mimic in older adults; evidence base includes a placebo-controlled trial showing gait improvement and meta-analysis data, but the screening framework itself awaits prospective validation.
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Emergency physicians should perform brief gait examination and screen for iNPH triad in older adults with depression or behavioral symptoms, as iNPH is a potentially reversible cause often mistaken for primary psychiatric disorder. For shunted patients presenting with anxiety or activity restriction, trauma-informed evaluation is warranted before assuming primary psychiatric diagnosis, as symptoms may reflect device-related concerns rather than psychiatric illness.
Graded across the dimensions that decide whether you should act, each from what the source actually supports. There is no single score, and where a dimension was not assessed it says so.
Background: Idiopathic normal pressure hydrocephalus (iNPH) is a neurological disorder and one of the few potentially reversible causes of dementia and disability in older adults. A recent systematic review and meta-analysis reports that apathy occurs in roughly 69% and depression in about 30% of affected patients. Because these neuropsychiatric manifestations are prominent early, iNPH may be mistaken for a primary psychiatric disorder, sometimes for years. Objective: To equip emergency physicians (EPs) caring for older adults with behavioral or cognitive complaints with a practical framework for recognizing iNPH as a neuropsychiatric mimic, and for trauma-informed assessment of shunt-dependent patients presenting with new psychiatric symptoms. Discussion: Frontal-subcortical circuit dysfunction in iNPH produces apathy, psychomotor slowing, depression, anxiety, and, in a minority of cases, agitation or psychotic phenomena. A 2025 placebo-controlled NEJM trial demonstrated significant gait improvement after shunting. A pooled estimate suggested a modest reduction in depression scores, although its confidence interval included no effect. In emergency settings, brief structured gait assessment combined with explicit screening for apathy versus sadness can help distinguish iNPH from depression and Alzheimer disease. Shunted patients who present with anxiety, hypervigilance, or activity restriction warrant careful, trauma-informed evaluation before a primary psychiatric diagnosis is assumed; their somatic concerns may be valid signals of mechanical malfunction or appropriate responses to permanent device dependence. Conclusions: Older adults presenting to the ED with depression, dementia, or new behavioral symptoms warrant a brief gait examination and a focused review for the iNPH triad. EPs play a pivotal role in recognizing this treatable neurological disorder when neuropsychiatric manifestations dominate the presentation, and in honoring the embodied knowledge of patients living with a permanent intracranial device. The screening approach described here is an expert-derived educational framework that awaits prospective validation.
Taken from the source record, never inferred. Follow any of these and new work involving them reaches your briefing.