CLINICAL CASE DISCUSSIONSTreatment of Depersonalization Disorder With Repetitive Transcranial Magnetic StimulationKARRIS, BIANCA C. MD; CAPOBIANCO, MARC MD, DFAPA; WEI, XIN MD; ROSS, LESLEY MDAuthor Information KARRIS: Department of Mental Health, United States Naval Hospital, Yokosuka, Japan CAPOBIANCO: Department of Mental Health, Naval Medical Center, San Diego, CA WEI: Department of Internal Medicine, Naval Hospital, Pensacola, FL ROSS: Department of Mental Health, Naval Medical Center, San Diego, CA The authors declare no conflicts of interest. Please send correspondence to: Bianca C. Karris, MD, Department of Mental Health, United States Naval Hospital, PCS 475 Box A, FPO, AP 96350 (e-mail: [email protected]). Journal of Psychiatric Practice: March 2017 - Volume 23 - Issue 2 - p 141-144 doi: 10.1097/PRA.0000000000000215 Buy Metrics Abstract High frequency repetitive transcranial magnetic stimulation (rTMS) was approved by the US Food and Drug Administration in 2008 to treat major depressive disorder in those who did not respond to at least 1 antidepressant trial. Previous studies have shown that both high frequency rTMS to the left dorsolateral prefrontal cortex (DLPFC) and low frequency rTMS to the right DLPFC have antidepressant efficacy in treatment-resistant depression. Although rTMS has been widely used in the treatment of depression, very few studies of rTMS in patients with depersonalization disorder (DPD) have been published so far. DPD involves persistent or recurrent experiences of unreality and feelings of detachment causing distress or functional impairment while insight remains intact. The prevalence of DPD is approximately 1% to 2%. Studies of the pharmacological treatment of DPD are limited, and medications have proven to be of limited benefit. We present the case of a 30-year-old man with major depressive disorder and DPD who did not respond to pharmacotherapy. After the patient was treated with low frequency rTMS to the right DLPFC followed by high frequency rTMS to the left DLPFC, there was a significant reduction in his depersonalization symptoms. Given its effectiveness in our patient, the use of both low frequency rTMS to the right DLPFC and high frequency rTMS to the left DLPFC for treatment of DPD should be further explored. Copyright © 2017 Wolters Kluwer Health, Inc. All rights reserved.