Severe tricuspid insufficiency as main manifestation of hyperthyroidism

The cardiac manifestations of the hyperthyroidism (HT) are diverse and frequent. However, sometimes, the initial symptoms are atypical and are difficult to diagnose. We present the case of a patient whose HT began with heart failure secondary to a severe tricuspid regurgitation (IT). This data suggests that when confronted with IT of unclear etiology, a possible HT must be investigated.