Thyrotoxicosis Periodic Paralysis: A Rare Presentation of a Common Disease.

We report a 31-year-old man of an Arabic ethnicity who presented to the Emergency Department (ED) with a one-night history of progressive generalized weakness followed by an inability to move all four limbs. The patient was found to have hypokalemia and hypophosphatemia. Detailed inpatient assessment revealed that the patient had undiagnosed Graves' disease with thyrotoxicosis causing electrolyte disturbances and paralysis. The patient's symptoms resolved after the correction of the electrolytes. In this case study, we report an unusual presenting symptom of paralysis of Graves' disease in a patient of Arabic ethnicity.