What is hypothyroidism?

What is hypothyroidism?

• A. Underactivity of thyroid gland
• B. Overactivity of thyroid gland
• C. Inflammation
• D. Normal thyroid function

Answer: (A)

Hypothyroidism is when the thyroid gland is not producing enough thyroid hormones. Those hormones control the body's metabolism, so when they’re low, the metabolic rate slows down. This can lead to fatigue, weight gain, cold intolerance, dry skin, constipation, and, in dogs, changes in coat and skin. The crucial point is that hypothyroidism describes underactivity of the thyroid gland, not overactivity, inflammation, or normal function. Hyperthyroidism would be the opposite (overactivity); thyroiditis or inflammation can cause thyroid problems but isn’t the definition; normal thyroid function would be euthyroid.

Hypothyroidism is when the thyroid gland is not producing enough thyroid hormones. Those hormones control the body's metabolism, so when they’re low, the metabolic rate slows down. This can lead to fatigue, weight gain, cold intolerance, dry skin, constipation, and, in dogs, changes in coat and skin. The crucial point is that hypothyroidism describes underactivity of the thyroid gland, not overactivity, inflammation, or normal function. Hyperthyroidism would be the opposite (overactivity); thyroiditis or inflammation can cause thyroid problems but isn’t the definition; normal thyroid function would be euthyroid.