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Why do old people shake their jaws? Exploring the causes of involuntary jaw tremors

According to the National Organization for Rare Disorders (NORD), essential tremor is one of the most common movement disorders, with jaw tremors being a potential symptom. So, why do old people shake their jaws? This involuntary movement can be unsettling for both the individual and their loved ones, but understanding the underlying causes is the first step toward finding answers and support.