Fasano A, Evoli A, Piano C, Tonali P A, Bentivoglio A R
Istituto di Neurologia, Università Cattolica del Sacro Cuore, Roma, Italia.
Parkinsonism Relat Disord. 2008;14(2):164-5. doi: 10.1016/j.parkreldis.2007.02.009. Epub 2007 Apr 24.
Head drop is characterized by marked anterior flexion of the cervical spine, caused by weakness of the neck extensors or by increased tone of the flexor muscles. We report a woman with Parkinson's disease and head drop not due to cervical dystonia (a common cause of antecollis in parkinsonisms). Clinical, radiological, and neurophysiological features together with responsiveness to anticholinesterases and plasma exchanges indicated the possibility of a concomitant myasthenia gravis.
低头症的特征是颈椎明显向前屈曲，这是由颈部伸肌无力或屈肌肌张力增加引起的。我们报告了一名患有帕金森病且低头症并非由颈部肌张力障碍（帕金森综合征中前斜颈的常见原因）所致的女性。临床、放射学和神经生理学特征以及对抗胆碱酯酶和血浆置换的反应表明可能合并重症肌无力。
