Skin Care

How do thyroid hormone levels affect the skin?

A Answers (2)

  • A , Dermatology, answered
    Low thyroid hormone (hypothyroidism) causes fish scale–like thickening of the skin that's rough and dry (myxedema). The skin on the hands and feet can turn yellow, the hair on the eyebrows can fall out, other hair becomes coarse, and brittle, and the nails break easily. Hyperthyroidism, caused by too much thyroid hormone, creates the opposite reaction in the skin: it may become moist and smooth, with a tendency to flush and get red. Some people with hyperthyroidism get a bronzed appearance to the skin (melanoderma) and even melasma on the cheeks.
  • A , Cardiology (Cardiovascular Disease), answered
    Thyroid hormone levels can affect the way your skin looks and feels. If you have abnormally low thyroid levels -- a condition called hypothyroidism -- your skin may become very dry. If you have abnormally high thyroid levels (hyperthyroidism), you may sweat excessively, leading to wet, clammy skin. If you notice any skin changes, see your primary care doctor or a dermatologist. Depending on your symptoms, your doctor may want to test your thyroid hormone levels. 
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