Signs
 

Warm-Up Phenomenon

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Overview

    • How to Assess

    • Grip myotonia - ask the patient to repeatedly grip and release your fingers, watching for initial muscle stiffness followed by relaxation with repeated performance
    • Repeated eye closure - ask the patient to repeatedly close and open their eyes, looking for initial lag followed by improvement with repetition.
    • Significance

    • Initial stiffness and lag that improves with repetition is a sign of myotonia.
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