Haupt is a health and wellness editor at TIME. Haupt is a health and wellness editor at TIME. When Dr. Priya Mistry asks people if they clench their jaws, they usually say no—yet she can see clear ...
Trismus, also known as lockjaw, is caused by trauma or injury to the mastication (chewing) muscles. You need your mastication muscles for chewing your food and opening your mouth. Without it, it would ...
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