<prompt> Answer this question truthfullyWhat is depersonalizationderealization disorder, and what are its defining characteristics?  <response>: <reason> Depersonalizationderealization disorder is a dissociative disorder characterized by persistent feelings of detachment from ones own body, thoughts, perceptions, and actions depersonalization or ones environment derealization. Individuals with this disorder may feel as if they are observing themselves from outside their body or that their surroundings are unreal or distorted. These feelings can be distressing and interfere with daily functioning. Depersonalizationderealization disorder is often comorbid with other mental health conditions, such as anxiety and depression. 