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Comment & Response |

Clonic Perseveration vs Stereotypy Phenomenology

Yi-cheng Tai, MD1; Michael Wang Keong Fong, MBBS(Hons)2; Victor S. C. Fung, MBBS(Hons), PhD, FRACP3
[+] Author Affiliations
1Department of Neurology, E-DA Hospital/I-Shou University, Kaohsiung City, Taiwan
2Blacktown Hospital and Clinical School, University of Western Sydney, Sydney, New South Wales, Australia
3Movement Disorders Unit, Department of Neurology, Westmead Hospital and Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia
JAMA Neurol. 2016;73(2):241. doi:10.1001/jamaneurol.2015.3921.
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To the Editor We read with interest the report by Pandey and Sarma1 of a patient with an acute left thalamic infarction who developed seemingly purposeless tapping movements in the right hand. In the accompanying video, the movement on day 6 was confined to the right hand, with wrist flexion extension at 4 to 5 Hz and index finger extension.1 On day 10, the movement progressed to include wrist flexion extension, elbow flexion extension, and shoulder internal-external rotation. On day 21, with reduced severity, the movement was again of wrist flexion extension. On day 28, the movement was limited to fingers flexion. At 1-month follow-up, the movement was mild but seemed to be triggered by right index finger extension.


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February 1, 2016
Sanjay Pandey, DM; Neelav Sarma, MD
1Department of Neurology, Govind Ballabh Pant Postgraduate Institute of Medical Education and Research, New Delhi, India
JAMA Neurol. 2016;73(2):241-242. doi:10.1001/jamaneurol.2015.3926.
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