Which statement reflects a sign of hyperthyroidism in a client?

The statement reflecting a sign of hyperthyroidism in a client is associated with an increased appetite. Hyperthyroidism leads to an overproduction of thyroid hormones, which accelerates metabolism and can cause the individual to feel hungrier than usual. This increased metabolic rate results in the body's utilization of energy at a higher pace, thereby leading to an increased appetite despite potential weight loss.

In contrast, weight gain, low energy, and cold intolerance are more commonly associated with hypothyroidism, which is characterized by insufficient thyroid hormone production leading to a slowed metabolism and resulting symptoms such as fatigue, weight gain, and difficulty tolerating cold temperatures.