Thyrotoxic periodic paralysis: A case report and literature review

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Abstract

We describe a 37-year-old man with a 4-month history of episodic muscular weakness, involving mainly lower-limbs. Hypokalemia was documented in one episode and managed with intravenous potassium chloride. Hyperthyroidism was diagnosed 4 months after onset of attacks because of mild symptoms. The patient was subsequently diagnosed as having thyrotoxic periodic paralysis associated with Graves' disease. Treatment with propranolol and methimazol was initiated and one year later he remains euthyroid and symptom free. Thyrotoxic periodic paralysis is a rare disorder, especially among Caucasians, but it should always be considered in patients with acute paralysis and hypokalemia, and thyroid function should be evaluated. ©2009 Marshfield Clinic.

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Barahona, M. J., Vinagre, I., Sojo, L., Cubero, J. M., & Pérez, A. (2009). Thyrotoxic periodic paralysis: A case report and literature review. Clinical Medicine and Research, 7(3), 96–98. https://doi.org/10.3121/cmr.2009.816

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