Final answer:
Lid lag is a common finding in Graves disease, which is associated with an overactive thyroid gland and hyperthyroidism, not with symptoms like weight gain or cold intolerance.
Step-by-step explanation:
The student asked which of the following is a common finding in Graves disease: weight gain, lid lag, cold intolerance, or brittle hair. The correct answer is lid lag. Graves disease is the most common cause of hyperthyroidism, which is characterized by an overactive thyroid gland. Symptoms of Graves disease are related to the excess production of thyroid hormones, leading to weight loss, heat intolerance, rapid and irregular heartbeat, and lid lag (a delay in the movement of the upper eyelid when looking downward). It is worth noting that in hyperthyroidism, there would be an increased metabolic rate, leading to excessive body heat and sweating, rather than cold intolerance. Weight gain and cold intolerance are typically associated with hypothyroidism, a condition where the thyroid gland is underactive.