Psychiatry Which of the following disorder is characterised by intense nihilisim, somatization and agitation in old age? A Bipolar depression B Atypical depression C Somatized depression D Involutional melancholia 💡 Explanation Which of the following disorder is characterised by intense nihilisim, somatization and agitation in old age? ✓ Correct Answer: D. Involutional melancholia