Trismus - also known as lockjaw - is the hallmark symptom associated with tetanus. It refers to the reduced opening of the jaws that is often caused by spasms in the affected muscles. Tetanus causes widespread muscle spasms, making it difficult to control certain parts of the body, including the jaws. The jaws may open or close without warning, and numbness may occur. If this loss of control extends to the lungs, the result could be fatal. That's why it is important to seek medical attention if you have any related symptoms.

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