Hypothyroidism Multiple Choice Exam MCQ Questions With Answers
What is the most common cause of hypothyroidism in adults?
A. Hashimoto's thyroiditis
B. Radiation therapy
C. Congenital hypothyroidism
D. Iodine deficiency
Answer: A. Hashimoto's thyroiditis
What are the common symptoms of hypothyroidism?
A. Fatigue, weight gain, and cold intolerance
B. Heat intolerance, weight loss, and rapid heartbeat
C. Headache, muscle cramps, and joint pain
D. Dizziness, nausea, and decreased appetite
Answer: A. Fatigue, weight gain, and cold intolerance
What type of hormone is commonly used to treat hypothyroidism?
A. Thyroxine (T4)
B. Triiodothyronine (T3)
C. Calcitonin
D. Parathyroid hormone
Answer: A. Thyroxine (T4)
Which of the following can interfere with the absorption of thyroxine medication for hypothyroidism?
A. Soy products
B. Coffee
C. Fiber-rich foods
D. Iron supplements
Answer: D. Iron supplements
What is the most important lab test for diagnosing hypothyroidism?
A. Thyroid-stimulating hormone (TSH)
B. Total T4
C. Free T4
D. Thyroid peroxidase antibodies (TPO-Ab)
Answer: A. Thyroid-stimulating hormone (TSH)
What is the normal range for the TSH test in individuals without hypothyroidism?
A. 0.3-3.0 mIU/L
B. 0.5-5.0 mIU/L
C. 1.0-10.0 mIU/L
D. 2.5-5.5 mIU/L
Answer: A. 0.3-3.0 mIU/L
What is the role of iodine in the development of hypothyroidism?
A. Iodine deficiency can cause hypothyroidism
B. Excessive iodine intake can cause hypothyroidism
C. Iodine has no role in the development of hypothyroidism
D. Both A and B
Answer: A. Iodine deficiency can cause hypothyroidism
Which of the following is a complication of untreated hypothyroidism?
A. Cardiovascular disease
B. Mental illness
C. Musculoskeletal problems
D. All of the above
Answer: D. All of the above
What is the role of the hypothalamus and pituitary gland in hypothyroidism?
A. They secrete thyroxine and triiodothyronine
B. They regulate the production and release of thyroid hormones
C. They are not involved in the regulation of thyroid hormones
D. They inhibit the production and release of thyroid hormones
Answer: B. They regulate the production and release of thyroid hormones
How is hypothyroidism treated in pregnant women?
A. With higher doses of thyroxine medication
B. With lower doses of thyroxine medication
C. With no treatment, as it is not recommended during pregnancy
D. With a combination of thyroxine and triiodothyronine medication
Answer: A. With higher doses of thyroxine medication.
A 32-year-old female presents with fatigue, weight gain, constipation, and cold intolerance. She also reports dry skin and brittle hair. Her TSH level is 8.5 mIU/L (normal range 0.4-4.0 mIU/L), and her free T4 level is 0.8 ng/dL (normal range 0.9-1.8 ng/dL). What is the most likely diagnosis?
a. Hypothyroidism
b. Hyperthyroidism
c. Euthyroid sick syndrome
d. Thyroiditis
Answer: a. Hypothyroidism
A 40-year-old male presents with weight gain, fatigue, and dry skin. He also reports decreased libido and occasional muscle aches. His TSH level is 3.5 mIU/L (normal range 0.4-4.0 mIU/L), and his free T4 level is 0.9 ng/dL (normal range 0.9-1.8 ng/dL). What is the most likely diagnosis?
a. Hypothyroidism
b. Hyperthyroidism
c. Euthyroid sick syndrome
d. Thyroiditis
Answer: a. Hypothyroidism
A 25-year-old female presents with anxiety, weight loss, palpitations, and heat intolerance. She also reports increased sweating and occasional diarrhea. Her TSH level is 0.2 mIU/L (normal range 0.4-4.0 mIU/L), and her free T4 level is 2.2 ng/dL (normal range 0.9-1.8 ng/dL). What is the most likely diagnosis?
a. Hypothyroidism
b. Hyperthyroidism
c. Euthyroid sick syndrome
d. Thyroiditis
Answer: b. Hyperthyroidism
A 65-year-old female presents with fatigue, weight gain, constipation, and cold intolerance. She also reports dry skin and brittle hair. Her TSH level is 4.8 mIU/L (normal range 0.4-4.0 mIU/L), and her free T4 level is 0.9 ng/dL (normal range 0.9-1.8 ng/dL). What is the most likely diagnosis?
a. Hypothyroidism
b. Hyperthyroidism
c. Euthyroid sick syndrome
d. Thyroiditis
Answer: a. Hypothyroidism
A 30-year-old female presents with weight gain, fatigue, and hair loss. She also reports irregular periods and infertility. Her TSH level is 2.5 mIU/L (normal range 0.4-4.0 mIU/L), and her free T4 level is 0.9 ng/dL (normal range 0.9-1.8 ng/dL). What is the most likely diagnosis?
a. Hypothyroidism
b. Hyperthyroidism
c. Euthyroid sick syndrome
d. Thyroiditis
Answer: a. Hypothyroidism
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