The skin is the body’s largest organ, and as such, it is an indicator of the general health status of the body. Skin problems and the thyroid function can be interrelated because hormones, including thyroid hormones, are instrumental in regulating the health and appearance of skin. When the thyroid gland becomes underactive or overactive, a variety of skin problems may result. For example, dry skin is a very common symptom of hypothyroidism because grease glands depend on thyroid hormones to secrete sebum (grease) that oils the skin and keeps it moist and supple. When dryness becomes extreme in hypothyroidism, the skin on the palms and soles of the feet may begin to thicken. This is known as keratoderma. Another skin problem associated with low thyroid function is yellowing of the skin due to changes in the body's ability to metabolize Vitamin A. Skin may also become swollen from edema, pale or waxy and wounds may heal slowly. Additional skin changes in those who suffer f...
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