title: Hairdresser dystonia: an unusual substantia nigra hyperechogenicity.
authors.affiliation: Department of Neurology, College of Medicine, The Catholic University of Korea, Seoul, South Korea.
authors.forename: Sang-Won
authors.initials: SW
authors.lastname: Yoo
authors.affiliation: Department of Neurology, College of Medicine, The Catholic University of Korea, Seoul, South Korea.
authors.forename: Hyung-Eun
authors.initials: HE
authors.lastname: Park
authors.affiliation: Department of Neurology, College of Medicine, The Catholic University of Korea, Seoul, South Korea.
authors.forename: Kwang-Soo
authors.initials: KS
authors.lastname: Lee
authors.affiliation: Department of Neurology, College of Medicine, The Catholic University of Korea, Seoul, South Korea. Electronic address: neuronet@catholic.ac.kr.
authors.forename: Joong-Seok
authors.initials: JS
authors.lastname: Kim
mesh_terms: D000328:Adult; D020821:Dystonic Disorders / Q000000981:diagnostic imaging* / Q000503:physiopathology*; D004576:Electromyography / Q000379:methods; D006801:Humans; D008297:Male; D013378:Substantia Nigra / Q000000981:diagnostic imaging*; D014463:Ultrasonography
keywords: Hairdresser; Substantia nigra; Task-specific dystonia; Transcranial sonography