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REM behavior disorder and excessive daytime somnolence in Machado–Joseph disease (SCA-3)



We reported previously that behavior suggestive of rapid eye movement sleep behavior disorder (RBD) was markedly increased in a small population of SCA-3 patients. We, therefore, asked patients and nonpatient attendees at an SCA-3 annual clinic to complete a questionnaire soliciting RBD-like behavior. Our results support the previous observation that RBD-like behaviors are significantly increased in SCA-3. © 2003 Movement Disorder Society