A goiter is an enlarged thyroid, and its impact on daily life depends on its underlying cause, what type of goiter it is, and how severe its symptoms are. But a goiter is treatable, and it often ...

In the United States, the most common cause of goiter is Hashimoto’s thyroiditis, says Dr. Barlow. This is an autoimmune disorder that causes hypothyroidism, or an underactive thyroid.

All of these disorders can result in an enlarged thyroid gland that causes swelling of the neck, a so-called goiter.

Generalized enlargement of the thyroid gland (goiter) due to iodine deficiency is rare in the United States and other developed countries. Additional symptoms can include an overactive or underactive ...

If you've ever noticed a lump at the base of your neck, it could be a sign of goiter, an abnormal enlargement of the thyroid gland. The condition is more common after age 40, and affects more women ...