Final answer:
Hyperhidrosis is a disorder characterized by overproduction of perspiration, which could be due to excessive heat or general body weakness, while hyperthyroidism, caused by an overactive thyroid gland, can also lead to excessive sweating among various other symptoms.
Step-by-step explanation:
The disorder characterized by an overproduction of perspiration may be referred to as hyperhidrosis, which can be a result of excessive heat or general body weakness. However, disorders like hyperthyroidism could also cause symptoms such as profuse sweating, weight loss, increased heart rate, and difficulty sleeping due to the overproduction of thyroid hormones.
Tumors of the thyroid gland are a common cause of this condition. It's important to note that while hyperhidrosis solely describes excessive sweating, hyperthyroidism is a more complex systemic disorder where excessive sweating is just one of many symptoms.