Idiopathic normal pressure hydrocephalus (iNPH)–the leading cause of reversible dementia in aging–affects 5.9% of adults older than 80.1 The clinical presentation of iNPH combining gait disorders, impaired cognition (ie, poor executive function and memory), and urinary incontinence is unspecific in aging and frequently found in alternate neurological and non-neurological conditions, such as Parkinson disease or vascular dementia, also called iNPH mimics or iNPH mimickers. In the Geneva Normal Pressure Hydrocephalus cohort, we reported a prevalence of 45.6% of iNPH mimics among a cohort of 125 patients with suspicion of iNPH.