Thyrotoxic periodic paralysis (TPP) represents an acquired form of hypokalemic periodic paralysis (HPP) in which attacs of weakness occur, often precipitated by rest after strenuous exercise or a high-carbohydrate load. TPP is more prevalent in Asians than non-asians. Despite a higher incidence of hyperthyroidism in females, over 95 percent of TPP occur in males. Any cause of hyperthyroidism can be associated with TPP. Graves’ disease is the underlying disorder in most of cases with TPP as it is the cause in most of cases with hyperthyroidism. We report a 28-year-old male presenting TPP with very low potassium level.

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