Bhawna Sharma, Raghavendra Bakki Sannegowda, Ashok Panagariya and Pankaj Gupta
Clonus is one of the important clinical sign elicited in neurology. It is the rhythmic muscle contraction which usually occurs in patients with lesions involving descending motor pathways. Repetition of this sequence of events induces rhythmic oscillation of some joints, the frequency of which is generally between 5 and 8 Hz. Clonus usually elicited at ankle and knee. Jaw clonus is rarely reported. We report here jaw clonus in a patient who presented with vascular dementia and Parkinsonism.
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