To the Editor: Rapid eye movement (REM) sleep behavior disorder (RBD) is a parasomnia characterized by a loss of REMrelated muscle atonia and abnormal motor activities during REM sleep with consequent sleep-related injuries. 1,2 It has been increasingly reported among psychiatric populations and has a potential association with use of psychotropics, particularly selective serotonin reuptake inhibitor (SSRI), tricyclic, and serotonin and noradrenergic reuptake inhibitor (SNRI) antidepressants. [3][4][5][6][7][8] A previous case report 5 found that cessation of SSRI treatment did not result in complete resolution of clinical RBD symptoms and polysomnographic (PSG) abnormalities. Our recent clinical epidemiologic study 8 found that 3.8% of psychiatric outpatients might have RBD features over the past year. The prevalence is 10 times more common than that of the typical RBD in the elderly general population. 9 In addition, the RBD features could result in sleep-related injuries and violence, with potential medicolegal repercussions. 8,10 In the current study, we conducted a comprehensive evaluation of clinical and PSG features as well as follow-up response to an open intervention of antidepressant regimen modification.Method. Fifteen depressed subjects with concurrent antidepressant treatment and features suggestive of RBD were included in this case series, which spans from December 2006 to March 2009. They were interviewed by experienced psychiatrists and neurologists for a thorough clinical evaluation, which included a semistructured psychiatric interview and physical examination with Hoehn and Yahr staging for parkinsonism. 11 They also underwent videopolysomnographic assessments at baseline and follow-up.Modification of their current antidepressant regimen was suggested to all subjects. Bupropion was offered as the treatment of choice in this open intervention, as it has rarely been associated