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  • Neck spasm

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    A neck spasm is an involuntary contraction of the muscles in the neck region.

  • Trismus

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    Trismus, also called lockjaw, is reduced opening of the jaws (limited jaw range of motion). It may be caused by spasm of the muscles of mastication or a variety of other causes. Temporary trismus occurs much more frequently than permanent trismus. It is known to interfere with eating, speaking, and maintaining proper oral hygiene. This interference, specifically with the patient's ability to swallow properly, results in an increased risk of aspiration. In some instances, trismus presents with altered facial appearance. The condition may be distressing and painful for the patient. Examination and treatments requiring access to the oral cavity can be limited, or in some cases impossible, due to the nature of the condition itself.

  • Cricopharyngeal spasm

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    Cricopharyngeal spasms occur in the cricopharyngeus muscle of the pharynx. These spasms are frequently misunderstood by the patient to be cancer due to the 'lump in the throat' feeling (Globus pharyngis) that is symptomatic of this syndrome. In practice, real lumps in the throat, such as a thyroid cancer, are generally not felt until they impede ingestion of food. This is one of the reasons that a cancer can get so big before it is discovered. In contrast, a cricopharyngeal spasm is an uncomfortable but harmless and temporary disorder.

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