Question

a disorder caused by hyperthyroidism is:
a goiter
b adenoma
c cretinism
d addison disease

Explanation:

• Goiter: Can be caused by hyperthyroidism (e.g., in Graves' disease, an autoimmune disorder that leads to over - production of thyroid hormones and often a goiter).
• Adenoma: A benign tumor. While a thyroid adenoma can sometimes cause hyperthyroidism (toxic adenoma), the question is about a disorder caused by hyperthyroidism, not the cause of hyperthyroidism.
• Cretinism: Caused by severe hypothyroidism (under - active thyroid) during fetal development or early childhood.
• Addison disease: Caused by adrenal gland insufficiency (under - production of adrenal hormones like cortisol), not related to thyroid hyperactivity.

Answer:

A. goiter