Final answer:
Tremors are commonly associated with hyperthyroidism, particularly Graves' disease, due to an overactivity of the thyroid gland.
Step-by-step explanation:
Tremors are a manifestation of hyperthyroidism, which is a condition where the thyroid gland is overactive. When the thyroid produces an excessive amount of hormones, it can lead to a variety of symptoms including an increased heart rate, weight loss, and tremors. One of the most common causes of hyperthyroidism is Graves' disease, where autoantibodies target thyroid-stimulating hormone receptors, causing the thyroid to be overstimulated. This can result in conflicting symptoms such as heat intolerance, a rapid and irregular heartbeat, goiter, and bulging eyes (exophthalmia).