Amiodarone is a class 3 antiarrhythmic drug which may be associated with thyroid dysfunction. Amiodarone-induced thyrotoxicosis (AIT) is classified as type 1 (AIT 1; which may develop in the presence of latent autoimmune hyperthyroid condition) or type 2 (AIT 2; which develops in an apparently normal thyroid resulting from destructive thyroiditis). AIT 1 routinely requires treatment with thionamides, whereas AIT 2 is treated with steroids. Resistance to the conventional treatment of hyperthyroidism is not commonly found in clinical practice. This report discusses a case of AIT 2 resistant to conventional treatment. Despite being on high doses of carbimazole and steroids (prednisolone), the patient remained thyrotoxic. Cholestyramine, a bile salt sequestrant, was used as an adjunctive therapy resulting in significant clinical and biochemical improvement. The patient subsequently became euthyroid and is being followed up in endocrine clinic.

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BES2016 Hashimoto's encephalopathy (HE) is a very rare neuropsychiatric condition associated with autoimmune thyroid disorders which shows a remarkable response to steroid therapy and hence is also called steroid-responsive encephalopathy associated with autoimmune thyroiditis (SREAT). It can be a diagnostic dilemma and we present a similar case presenting twice with psychoaffective symptoms but not receiving the diagnosis on first presentation.

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