Aronson A E, Hartman D E
J Speech Hear Disord. 1981 Feb;46(1):52-8. doi: 10.1044/jshd.4601.52.
Adductor spastic dysphonia may not be one disorder but a voice sign of several different neurologic and psychiatric syndromes. This study evaluates whether rhythmic voice arrests, often components of "spastic dysphonia," are signs of essential tremor, a neurologic disorder. Data on 22 patients originally diagnosed as having spastic dysphonia, who had tremor-like or rhythmic voice arrests, were compared with data on two groups of patients who had essential (voice) tremor. The frequency of voice arrest on vowel prolongation in the group labeled spastic dysphonia was compared with the frequency of voice tremor in the groups with essential tremor. The median frequencies of 5.7, 5.0, and 5.5 Hz were not significantly different among the three groups. Patients in all three groups had tremor in other parts of the body, other scattered neurologic signs, and histories of life stress associated with the onset of their voice disorders. Although the results do not prove conclusively that the patients diagnosed as having spastic dysphonia in this study actually had essential tremor, the similarities to that disorder strongly suggest a linkage.
内收肌痉挛性发音障碍可能并非单一疾病，而是几种不同神经和精神综合征的一种语音表现。本研究评估了常作为“痉挛性发音障碍”组成部分的节律性语音停顿是否为一种神经系统疾病——特发性震颤的表现。将22例最初诊断为痉挛性发音障碍且存在震颤样或节律性语音停顿的患者的数据，与两组患有特发性（语音）震颤的患者的数据进行了比较。将标记为痉挛性发音障碍组中元音延长时语音停顿的频率，与特发性震颤组中语音震颤的频率进行了比较。三组的中位数频率分别为5.7Hz、5.0Hz和5.5Hz，差异无统计学意义。所有三组患者身体其他部位均有震颤、其他散在的神经系统体征，且有与语音障碍发病相关的生活应激史。尽管结果并不能确凿证明本研究中诊断为痉挛性发音障碍的患者实际患有特发性震颤，但与该疾病的相似性强烈提示存在关联。
