Hypothyroidism - Primary
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Diagnosis & Tests
Physical examination may reveal a smaller than normal gland, though sometimes the gland is normal in size or even enlarged (goiter). Other physical findings include pale, yellow, and dry skin; thin, brittle hair; loss of the edges of the eyebrows; coarse facial features; firm swelling of the arms and legs; and slow muscle relaxation when reflexes are tested. Vital signs may reveal a slow heart rate, low blood pressure, and low temperature.
A chest X-ray sometimes reveals an enlarged heart.
Laboratory tests to determine thyroid function include:
Additional laboratory abnormalities may include:
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