title: A case presented with "as if" phenomenon.
abstract: A 22-year-old young male who was brought with a history of feeling of unreality, as if he himself and his surroundings had changed, since six months without any comorbid mental disorder or physical illness. Premorbidly he had some "obsessional traits". Mental state examination revealed perceptual disorder in the form of depersonalization and derealization with insight grade VI. The patient was admitted and treated with pharmacotherapy and behavior therapy (relaxation exercise).
authors.affiliation: Department of Psychiatry, Assam Medical College and Hospital, Dibrugarh, Assam, India.
authors.forename: Soumitra
authors.initials: S
authors.lastname: Ghosh
authors.forename: Kushal K
authors.initials: KK
authors.lastname: Tamuli
authors.forename: Sabita
authors.initials: S
authors.lastname: Dihingia