Which condition is typically characterized by fatigue, weight gain, and cold intolerance?

• A. Hyperthyroidism
• B. Hypothyroidism
• C. Cushing's syndrome
• D. Diabetes mellitus

Answer: (B)

The condition that is typically characterized by fatigue, weight gain, and cold intolerance is hypothyroidism. This occurs when the thyroid gland does not produce enough thyroid hormones, which are crucial for regulating metabolism and energy levels in the body.

In individuals with hypothyroidism, the slowed metabolism can lead to increased fatigue as the body struggles to fulfill energy demands. Additionally, weight gain is common because the reduced metabolic rate results in the body burning fewer calories. Cold intolerance is another hallmark symptom, as thyroid hormones help regulate body temperature; a deficiency can make an individual more sensitive to cold environments.

These symptoms collectively point towards a deficiency in thyroid hormone function, distinguishing hypothyroidism from other conditions such as hyperthyroidism, Cushing's syndrome, or diabetes mellitus, which have different symptomatology and underlying mechanisms.