Task‐specific dystonias
Task‐specific dystonias
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任务特异性肌张力障碍
作者：
W. Koller
致编辑：Rosenbaum和Jankovic报道了一例局灶性tak特异性死亡患者。10例患者有震颤，10例有震颤和色素沉着。功能障碍发生在特定的taebe euch ae笔迹，但只是在某些类型的写作，而饮用液体，但只有在某些条件下。另1例患者出现舌震颤，但仅限于舌突出或处于特定位置时。患者主诉与某些任务中出现的功能障碍有关。我们还观察到许多类似的患者，我们诊断为患有缓解性震颤，他们的姿势性或运动性震颤很小。这些患者也经常有症状性震颤的阳性家族史，并且酒精摄入后震颤常常不明显减少。其中一例患者仅在进食时出现震颤。另一个人抱怨说，当他的头向下倾斜时，他的头会颤抖。M e r e抱怨说，只有当手处于特定位置时，他才会与饮用液体发生冲突。类似地，舌震颤只会在某些位置出现。经检查，震颤的存在或严重程度取决于所保持的精确的姿势或所执行的运动。例如，前臂旋前可能会增加手腕震颤（呼气震颤），或者当向下看时头部震颤可能会大大增加（阅读震颤）。手的震颤可能只出现在某些位置（图6）。一些病人学会了积极地使用这些药物-
To the Editor: Rosenbaum and Jankovic’ reported patienta with focal taak-epecific dieordere. Ten of thew patienta had tremor, and another 10 had tremor and dyetonia. Dysfunction occurred during specific taebe euch ae handwriting, but just with certain typee of writing, and while drinking liquids, but only under certain conditions. Another patient had tongue tremor, but only when the tongue waa protruded or in certain positions. The patients’ complaiita were related to functional dieability occurring during certain tasks. We have also observed many similar patienta we diagnosed ae having easential tremor who had minimal postural or kinetic tremore. These patienta also frequently had a positive family hietory for egeential tremor and often reportad tremor reduction with alcohol ingeetion. One such patient had tremor only while ehaving. Another complained of head tremor while readins becam his head would shake when tilted downward. M e r e complained of ditsculty with drinking liquids but only when the hande were in specific positions. Similarly, tongue tremore would be present only during certain positions. On examination the presence or severity of tremor wan dependent on the precise poeture being maintained or movement being executed. For example, forearm pronation may increase wrist tremor (ehaving tremor) or head tremor may greatly increaee when looking downward (reading tremor). Tremor of the hand may be present only in certain positions (6gure). Some patienta learn to actively w u m e thoee poe-