<prompt> 60 years old alcoholic male presented with urinary incontinence and abnormal gait since 3 months. He also complains of loss of memory. What is the diagnosis?Huntingtons diseaseNormal pressure hydrocephalusWernickes encephalopathyCynocobalamine deficiency  <response>: Harrisons principles of internal medicine 17th edition. For NPH normal pressure hydrocephalus clinical triad includes an abnormal gait ataxic apractic, dementia and urinary incontinence. 