Written by Mohammad Sameer Khan, who is working as a Lecturer Psychiatric Social Worker in Institute of Mental Health and Neurosciences, Government Medical College Srinagar, Jammu and Kashmir India. The author discusses about the understanding and treatment of the schizoid personality disorder using various approaches such as cognitive behavioral, psychoanalytical and bioenergetics analysis. The author discusses various concepts such as stages of attachment by Bartholomew, various defense mechanisms used in schizoid personality. Author also discusses the concepts such as relational dynamics of schizoid personality, reality vs image, defense against terror, despair and dissociation. Author also discusses the various approaches of management such as cognitive approach, psychoanalytical approach and Bioenergetics analysis approach.