<prompt> An elderly gentleman develops severe depression. This condition is called:Involutional melancholiaLate onset melancholiaPseudo-dementiaAtypical depression  <response>: Involutional melancholia was described by Emil Kraepelin. It is characterized by severe and agitated depression in elderly individuals. It can be associated with secondary delusions, hallucinations and other psychotic experiences. It is quite common to see hypochondriacal ideasdelusions in these individuals. Atypical depression has carbohydrate craving rather than avoidance 