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Updated: Jul 29, 2025

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A Case of Sudden-Onset Flaccid Paralysis In a Previously Healthy Person
Femina Patel1, Chris Mehdizadeh1, Prashila Amatya1
1Internal Medicine, University of California, Riverside School of Medicine, Riverside, USA.
Abstract:
Flaccid paralysis is a neurological syndrome characterized by weakness and paralysis of the limbs, followed by reduced muscle tone. Common causes of flaccid paralysis include blockage of the anterior spinal artery, trauma to the spinal cord, cancer, arterial disease, or thrombosis. A potential differential diagnosis in a 35-year-old male presenting with sudden-onset flaccid paralysis with no history of trauma is hypokalemic periodic paralysis. Treatment with potassium can alleviate symptoms in affected patients. .
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