The thyroid gland helps to control the metabolism of the entire body. Thyroid conditions, such as Graves' disease, hypothyroidism (underactive), hyperthyroidism (overactive) and Hashimoto's disease, can cause many different symptoms. While symptoms like fatigue and digestive problems are not obvious, some of the symptoms are visual, making thyroid disease more noticeable.
Enlargement
Many thyroid conditions can cause a goiter (enlargement) of the thyroid gland. This shows as a lump or swelling of the neck.
Nodules
Thyroid disease can cause nodules to grow on the gland and some can be visible. Though most thyroid nodules are benign, they should be checked by a physician to make sure they aren't cancerous.
Weight Change
Hypothyroidism can cause weight gain that is difficult to take off. Hyperthyroidism, on the other hand, can bring on rapid weight loss.
Skin and Hair
Hypothyroidism can cause dry skin and hair. Hyperthyroidism can actually make the hair fine and brittle.
Other Symptoms
An imbalance of the thyroid can also trigger depression, which can be visible to some. Graves' disease can cause one or both of the eyes to bulge.
Tags: disease cause, Graves disease, Hypothyroidism cause, thyroid gland