Apathetic Hyperthyroidism

Apathetic hyperthyroidism refers to hyperthyroidism without clear symptoms of thyrotoxicosis (see Chapter 4). Normally, people who are thyrotoxic as a result of hyperthy-roidism have a racing heart, enlarged thyroid gland, tremor, restlessness and anxiety, and signs of thyroid eye disease (see Chapter 23). In apathetic hyperthyroidism, the telltale signs doctors count on to diagnose hyperthyroidism are absent instead, a person with apathetic hyperthyroidism may even seem calm and mild-mannered....