[HT-04-1] Natural history of idiopathic REM behavior disorder: parasomnia vs. harbinger of synucleinopathies

Carlos Schenck (Minnesota Regional Sleep Disorders Center, Departments of Psychiatry, Hennepin County Medical Center, and University of Minnesota Medical School, USA)

REM sleep behavior disorder (RBD) now attracts much interest from the neurology community, mostly because RBD was incorporated with the revised clinical diagnostic criteria of dementia with Lewy bodies (DLB) as one of the core clinical features in 2017. It has been also well established that RBD often precedes other symptoms and signs of synucleinopathies. Under this circumstance, neurologists should understand what RBD is and to make an early diagnosis of RBD. However, historically RBD was classified as one of the parasomnias with a long history of sleep research, and patients with isolated/idiopathic RBD seek medical help for violent or potentially harmful behaviors during sleep. In this symposium, the speakers from different subspecialties are going to focus this dual nature of RBD. We expect the audience to obtain in-depth knowledge about RBD.

[HT-04-2] The relationship between REM sleep behavior disorder and hallucinations in patients with DLB

Manabu Ikeda¹, Hideki Kanemoto¹, Kenji Yoshiyama¹, Mamoru Hashimoto², Hiroaki Kazui³ (1.Department of Psychiatry, Osaka University Graduate school of Medicine, Japan, 2.Department of Neuropsychiatry, Faculty of Life Sciences, Kumamoto University, 3.Department of Neuropsychiatry, Kochi Medical School, Kochi University)

REM sleep behavior disorder (RBD) now attracts much interest from the neurology community, mostly because RBD was incorporated with the revised clinical diagnostic criteria of dementia with Lewy bodies (DLB) as one of the core clinical features in 2017. It has been also well established that RBD often precedes other symptoms and signs of synucleinopathies. Under this circumstance, neurologists should understand what RBD is and to make an early diagnosis of RBD. However, historically RBD was classified as one of the parasomnias with a long history of sleep research, and patients with isolated/idiopathic RBD seek medical help for violent or potentially harmful behaviors during sleep. In this symposium, the speakers from different subspecialties are going to focus this dual nature of RBD. We expect the audience to obtain in-depth knowledge about RBD.

[HT-04-3] REM sleep behavior disorder in patients with Parkinson's disease

Takashi Nomura (Nomura Neuro Sleep Clinic, Japan)

REM sleep behavior disorder (RBD) now attracts much interest from the neurology community, mostly because RBD was incorporated with the revised clinical diagnostic criteria of dementia with Lewy bodies (DLB) as one of the core clinical features in 2017. It has been also well established that RBD often precedes other symptoms and signs of synucleinopathies. Under this circumstance, neurologists should understand what RBD is and to make an early diagnosis of RBD. However, historically RBD was classified as one of the parasomnias with a long history of sleep research, and patients with isolated/idiopathic RBD seek medical help for violent or potentially harmful behaviors during sleep. In this symposium, the speakers from different subspecialties are going to focus this dual nature of RBD. We expect the audience to obtain in-depth knowledge about RBD.

[HT-04-4] Aggressive behavior and dream contents in RBD: why and how?

Ki-Young Jung (Seoul National University College of Medicine, Korea)

REM sleep behavior disorder (RBD) now attracts much interest from the neurology community, mostly because RBD was incorporated with the revised clinical diagnostic criteria of dementia with Lewy bodies (DLB) as one of the core clinical features in 2017. It has been also well established that RBD often precedes other symptoms and signs of synucleinopathies. Under this circumstance, neurologists should understand what RBD is and to make an early diagnosis of RBD. However, historically RBD was classified as one of the parasomnias with a long history of sleep research, and patients with isolated/idiopathic RBD seek medical help for violent or potentially harmful behaviors during sleep. In this symposium, the speakers from different subspecialties are going to focus this dual nature of RBD. We expect the audience to obtain in-depth knowledge about RBD.

[HT-04-5] Preparation and future direction of clinical trials for idiopathic REM sleep behavior disorder

Masayuki Miyamoto^1,2,3, Tomoyuki Miyamoto⁴ (1.Department of Clinical Medicine for Nursing, Dokkyo Medical University School of Nursing, Japan, 2.Department of Neurology, Dokkyo Medical University Hospital, Japan, 3.Center of Sleep Medicine, Dokkyo Medical University Hospital, Japan, 4.Department of Neurology, Dokkyo Medical University Saitama Medical Center, Japan)

REM sleep behavior disorder (RBD) now attracts much interest from the neurology community, mostly because RBD was incorporated with the revised clinical diagnostic criteria of dementia with Lewy bodies (DLB) as one of the core clinical features in 2017. It has been also well established that RBD often precedes other symptoms and signs of synucleinopathies. Under this circumstance, neurologists should understand what RBD is and to make an early diagnosis of RBD. However, historically RBD was classified as one of the parasomnias with a long history of sleep research, and patients with isolated/idiopathic RBD seek medical help for violent or potentially harmful behaviors during sleep. In this symposium, the speakers from different subspecialties are going to focus this dual nature of RBD. We expect the audience to obtain in-depth knowledge about RBD.

Session information