More common: 1  Black, tarry stools. 2  blood in the urine or stools. 3  bloody vomit. 4  diarrhea. 5  joint pain. 6  reddening of the skin. 7  sores in the mouth or lips. 8  stomach pain. 9  swelling of the feet or lower legs.
Enlarged thyroid. Goiter (GOI-tur) is an abnormal enlargement of your thyroid gland. Your thyroid is a butterfly-shaped gland located at the base of your neck just below your Adam's apple.Although goiters are usually painless, a large goiter can cause a cough and make it difficult for you to swallow or breathe.nlarged thyroid. Goiter (GOI-tur) is an abnormal enlargement of your thyroid gland. Your thyroid is a butterfly-shaped gland located at the base of your neck just below your Adam's apple.
The most common cause of hypothyroidism is Hashimoto's thyroiditis. Thyroiditis is an inflammation of the thyroid gland. Hashimoto's thyroiditis is an autoimmune disorder. With Hashimotoâs, your body produces antibodies that attack and destroy the thyroid gland.Thyroiditis may also be caused by a viral infection.Other causes of hypothyroidism include: Radiation therapy to the neck area.Treating certain cancers, such as lymphoma, requires radiation to the neck.ith Hashimotoâs, your body produces antibodies that attack and destroy the thyroid gland. Thyroiditis may also be caused by a viral infection. Other causes of hypothyroidism include: Radiation therapy to the neck area.