Parálisis hipopotasémica familiar: reporte de caso

Familial hypokalemic paralysis is a rare muscular channelopathy, predominantly in males, characterized by generalized muscle weakness associated with hypokalemia, with complete recovery of symptoms after normalization of serum potassium levels; The main triggers are cessation of effort after strenuous exercise and carbohydrate-rich dinners. Below we present the case of a male adolescent with a family history of a similar condition, who after high carbohydrate intake presents with the first episode of acute muscle weakness associated with severe hypokalemia, whose symptoms resolve with the correction of the electrolyte disorder, thus meeting the criteria. Diagnoses of familial hypokalemic paralysis. The main lesson that this case leaves us is that although it is a rare disease, its suspected diagnosis should be included in a patient with muscle weakness.