What is a common symptom of hyperthyroidism?

In hyperthyroidism, the overproduction of thyroid hormones leads to an increase in metabolic rate, which manifests in several ways in the body. One of the hallmark symptoms of hyperthyroidism is an increased heart rate, medically known as tachycardia. This occurs because the excess thyroid hormones stimulate the heart to pump more vigorously and rapidly, resulting in palpitations or a noticeable increase in heart rate.

This symptom is often accompanied by other signs of heightened metabolism, such as warmth, increased sweating, and weight loss, despite possible increased appetite. The physiological changes affecting the cardiovascular system in hyperthyroidism highlight the condition's overall impact on metabolic processes and energy expenditure. Hence, increased heart rate is a predominant symptom that healthcare providers look for when diagnosing and treating hyperthyroidism.