Nakashima K, Kusumi M, Inoue Y, Takahashi K
Division of Neurology, Institute of Neurological Sciences, Tottori University, Yonago, Japan.
Mov Disord. 1995 Jul;10(4):440-3. doi: 10.1002/mds.870100406.
We evaluated the prevalence of focal dystonias in the western area of Tottori Prefecture in Japan. The population of the area was 244,935 on October 1, 1992. Because four patients with blepharospasm and three patients with writer's cramp did not visit any hospitals or clinics in 1993 and did not reply to our question letter, we could not confirm their present condition: with or without focal dystonia in 1993. Four patients with facial dystonia including blepharospasm and oromandibular dystonia, seven with spasmodic torticollis, and four with writer's cramp were observed. The prevalence of focal dystonias was 6.12 per 100,000 persons, which may be lower than that in western countries. Although the reasons for this difference are still unclear, a genetic factor may be one implication.
我们评估了日本鸟取县西部地区局灶性肌张力障碍的患病率。1992年10月1日该地区人口为244,935人。由于4例眼睑痉挛患者和3例书写痉挛患者在1993年未前往任何医院或诊所就诊，也未回复我们的询问信，因此我们无法确认他们1993年的现状：是否患有局灶性肌张力障碍。观察到4例患有包括眼睑痉挛和口下颌肌张力障碍在内的面部肌张力障碍患者、7例痉挛性斜颈患者和4例书写痉挛患者。局灶性肌张力障碍的患病率为每10万人6.12例，这可能低于西方国家。尽管造成这种差异的原因尚不清楚，但遗传因素可能是其中一个原因。
