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Archivos argentinos de pediatría
versão impressa ISSN 0325-0075versão On-line ISSN 1668-3501
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FLORIO, Selene et al. Muscle weakness with hypokalemia and hyperthyroidism in an adolescent with Down syndrome. Arch. argent. pediatr. [online]. 2019, vol.117, n.1, pp.e37-e40. ISSN 0325-0075. http://dx.doi.org/10.5546/aap.2019.e37.
Acute hypokalemic paralysis is a rare cause of acute weakness. Thyrotoxic periodic paralysis (TPP) is an unusual complication of hyperthyroidism. It is characterized by sudden onset of hypokalemia condition resulting from a shift of potassium into cells and paralysis that primarily affects the lower extremities. Failure to recognize TPP may lead to improper management. Treatment of TPP includes replacing potassium rapidly, using nonselective beta-blockers and correcting the underlying hyperthyroidism as soon as possible. TPP is curable once euthyroid state is achieved. We describe a 13-year-old male with Down syndrome who presented with acute onset of lower extremity weakness secondary to acute hypokalemia and was found to have new onset Graves' disease.
Palavras-chave : Familial periodic paralysis; Hyperthyroidism; Methimazole; Hypokalemia; Down syndrome.