Abstract

Background: Background: Thyrotoxic Periodic Paralysis (TPP) is a rare but life-threatening complication of thyrotoxicosis, characterized by recurrent episodes of muscle weakness associated with hypokalemia. Although Graves’ disease is the most common cause, thyroiditis is an unusual etiology.
Case: We report a 20-year-old male who presented with acute flaccid quadriparesis. Investigations revealed hypokalemia, suppressed TSH with elevated free T4, positive thyroid autoantibodies and reduced radionuclide uptake suggestive of thyroiditis. He improved with potassium replacement and β-blockers.
Conclusion: This case highlights the importance of thyroid function testing in all patients presenting with hypokalemic paralysis, as silent thyroiditis may rarely present as TPP.

Keywords:Catecholamines; Iymphocytic infiltration; Thyroid radionuclide; Normokalemic; Diplopia