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An underactive thyroid, also called hypothyroidism, occurs when the thyroid gland fails to release enough of T4 or thyroxine hormone in the body. Since many of these symptoms of underactive thyroid are found in some other medical conditions too, it is extremely difficult to identify underactive thyroid accurately. When you know what happens if you have an underactive thyroid, it will help in every way. Learn about the symptoms and treatment of underactive thyroid.
