<prompt> Derealisation and depersonalization are seen in which type of disorderDissociative disorderPersonality disorderManiaSomatoform disorder  <response>: Derealization: Sensation of changed reality or that ones surroundings have altered. Usually seen in schizophrenia, panic attacks, and dissociative disorders Depersonalization: Sensation of unreality concerning oneself, pas of oneself, or ones environment that occurs under extreme stress or fatigue. Seen in schizophrenia, depersonalization disorder, and schizotypal personality disorder Reference: P.923 7.3 Signs and Symptoms in Psychiatry 