Warm-Up Phenomenon
June 30th, 2019
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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