A patient has fatigue, weight gain, cold intolerance, and a TSH of 18 mIU/L with a low free T4. What is the diagnosis?
Answer and explanation
Correct answer: A. Primary hypothyroidism
- Step 1: A high TSH with a low free T4 indicates failure of the thyroid gland.
Answer
Primary hypothyroidism.
Why not the others: Graves disease causes a low TSH.
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