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Myasthenia gravis: an unrecognized cause of head drop in Parkinson's disease.

Author(s): Fasano A, Evoli A, Piano C, Tonali PA, Bentivoglio AR

Affiliation(s): Istituto di Neurologia, Universita Cattolica del Sacro Cuore, Roma, Italia. alfonso.fasano@rm.unicatt.it <alfonso.fasano@rm.unicatt.it>

Publication date & source: 2008, Parkinsonism Relat Disord., 14(2):164-5. Epub 2007 Apr 24.

Publication type: Case Reports

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.

Page last updated: 2008-06-22

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