<sod>Bundy underwent multiple psychiatric examinations; the experts' conclusions varied. Dorothy Otnow Lewis, Professor of Psychiatry at the [[New York University School of Medicine]] and an authority on violent behavior, initially made a diagnosis of [[bipolar disorder]],{{sfn|Nelson|1994|p=152}} but later changed her impression more than once.{{sfn|Rule|2009|p=xiv}}{{sfn|Michaud|Aynesworth|1999|p=331}} She also suggested the possibility of a [[dissociative identity disorder|multiple personality disorder]], based on behaviors described in interviews and court testimony: a great-aunt witnessed an episode during which Bundy "seemed to turn into another, unrecognizable person&nbsp;... [she] suddenly, inexplicably found herself afraid of her favorite nephew as they waited together at a dusk-darkened train station. He had turned into a stranger."{{sfn|Nelson|1994|p=154}} Lewis recounted a prison official in Tallahassee describing a similar transformation: "He said, 'He became weird on me.' He did a metamorphosis, a body and facial change, and he felt there was almost an odor emitting from him. He said, 'Almost a complete change of personality&nbsp;... that was the day I was afraid of him.{{' "}}{{sfn|Nelson|1994|pp=231–232}} [[Narcissistic personality disorder]] (NPD) has also been proposed in at least one subsequent retrospective analysis.<ref>Describing Ted Bundy’s Personality and Working towards DSM-V. Douglas B. Samuel and Thomas A. Widiger. Department of Psychology at the University of Kentucky.Independent Practitioner (2007), 27 (1), pp. 20–22.</ref><eod>
<sod>Bundy underwent multiple psychiatric examinations; the experts' conclusions varied. Dorothy Otnow Lewis, Professor of Psychiatry at the [[New York University School of Medicine]] and an authority on violent behavior, initially made a diagnosis of [[bipolar disorder]],{{sfn|Nelson|1994|p=152}} but later changed her impression more than once.{{sfn|Rule|2009|p=xiv}}{{sfn|Michaud|Aynesworth|1999|p=331}} She also suggested the possibility of a [[dissociative identity disorder|multiple personality disorder]], based on behaviors described in interviews and court testimony: a great-aunt witnessed an episode during which Bundy "seemed to turn into another, unrecognizable person&nbsp;... [she] suddenly, inexplicably found herself afraid of her favorite nephew as they waited together at a dusk-darkened train station. He had turned into a stranger."{{sfn|Nelson|1994|p=154}} Lewis recounted a prison official in Tallahassee describing a similar transformation: "He said, 'He became weird on me.' He did a metamorphosis, a body and facial change, and he felt there was almost an odor emitting from him. He said, 'Almost a complete change of personality&nbsp;... that was the day I was afraid of him.{{' "}}{{sfn|Nelson|1994|pp=231–232}} <eod>