<prompt> Which of the following is the most common cause of reversible dementia in geriatric population?DepressionNormal Pressure HydrocephalusHypothyroidismVit B12 deficiency  <response>: The three most common potentially reversible diagnoses were depression, normal pressure hydrocephalus NPH, and alcohol dependence; medication side effects are also common and should be considered in every patient There are several clearly reversible causes of dementia that are remembered by the mnemonic DEMENTIA:Drugs any drug with anticholinergic activity, Emotional- depression, Metabolic hypothyroid, Eyes and ears declining, Normal pressure hydrocephalus tumor or other space-occupying lesions, Infection syphilis, AIDS, Anaemia vitamin B12 or folate deficiency.Harrison 19 e pg: 171 