Thyroid storm presenting as congestive heart failure and protein-S deficiency-induced biventricular and internal jugular venous thrombii.

The thyroid storm is a medical emergency characterized by decompensation of one or more organ systems. Associated cardiac involvement carries poor prognosis. Early recognition and appropriate management of life-threatening thyrotoxicosis is vital to prevent the high morbidity and mortality that may accompany this disorder. We report a young lady presenting with thyroid storm presenting as acute heart failure with biventricular and bilateral internal jugular venous thrombi. In addition, she also had thyrotoxicosis-induced transient protein-S deficiency which recovered following remission.