This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Psychiatry
[{'content': 'Intense nihilism, somatization and agitation in old age are the hallmark symptoms of - \nSelect and explain. \nA. Involutional melancholia, B. Atypical depression, C. Somatized depression, D. Depressive stupor', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Involutional melanocholia has following featurs\n\ni)\xa0\xa0\xa0 Involutional (old) age group\nii) Melanocholia (multiple somatic symptoms → somatization)\niii) Psychomotor agitation / Retardation\niv) Psychotic features (delusion of nilism, guilt, perseution, Hypochondriacal; Hallucinations).\n\nAtypical depression is characterized by increased appetite / increased weight, increased sleep (hypersomnia), Lethargy, Rejection sensitivity.\nFor somatized depression see a previous explanation.\nDepressive stupor occurs in the severe depression where the person is akinetic (immobile) and mute.', 'role': 'assistant'}]