Thyroid Disease . What Is Thyroid Disease? Thyroid disease occurs when the thyroid gland doesn't supply the proper amount of hormones needed by the body. .
MedlinePlus: Thyroid Diseases Overviews; Thyroid Disease (American College of Obstetricians and Gynecologists); Your Thyroid Gland (American Academy of Otolaryngology--Head and Neck Surgery) .
