Cataplexy
From W8MD weight loss and sleep centers
Cataplexy is a sudden and brief loss of muscle control, typically triggered by strong emotions such as laughter, anger, or surprise. This sudden loss of muscle tone can cause a person to collapse, but it does not result in loss of consciousness. Cataplexy is a symptom of narcolepsy, a sleep disorder characterized by excessive daytime sleepiness and sudden, uncontrollable sleep attacks. Treatment options may include medication, therapy, and lifestyle changes.
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