RT Journal Article SR Electronic T1 Insomnia treatment by Olanzapine. Is sleep state misperception a psychotic disorder? JF Neurosciences Journal JO Neurosciences (Riyadh) FD Prince Sultan Military Medical City SP 110 OP 112 VO 15 IS 2 A1 Habibolah Khazaie A1 Leeba Rezaie A1 Masoud Tahmasian A1 David C. Schwebel YR 2010 UL http://nsj.org.sa/content/15/2/110.abstract AB Offering a new perspective on sleep state misperception, we discuss a patient who presented with sleep state misperception and was ultimately diagnosed with delusional disorder. A 60-year-old woman with chief complaints of insomnia, agitation, and suicidal ideation, was admitted to an inpatient psychiatric ward. Based on information from her family and a mental state examination, her primary diagnosis was sleep state misperception. She was treated with Trazodone. Because she was unresponsive to the treatment, a full psychiatric evaluation and wrist actigraphy report were undertaken, resulting in a revised diagnosis of delusional disorder. She was started on Olanzapine and, after 6 weeks was discharged with good improvement. Sleep state misperception might be considered not just as a sleep disorder, but also as a psychiatric disorder with psychotic symptoms. Further research is recommended.