A Case of Amiodarone-Induced Thyrotoxicosis: A diagnostic and therapeutic dilemma

Amiodarone is an iodine rich agent widely used for the treatment of ventricular arrhythmias, paroxysmal supraventricular tachycardia, atrial fibrillation and flutter. however 14–18% of patients treated with amiodarone develop overt thyroid dysfunction in the form of either amiodarone-induced thyrotoxicosis (ait) or amiodaroneinduced hypothyroidism (aih). two different types of ait have been recognised and designated as type 1 and type 2. distinguishing between the two is often difficult, but necessary for instituting appropriate treatment. we report a case of a 56 year-old male patient who was started on amiodarone for atrial fibrillation and then developed ait. the challenges in the diagnosis and management of these patients are discussed