Thyroid is a small, butterfly-shaped gland located at the base of the neck just below the Adam's apple. Thyroid is part of an intricate network of glands called the endocrine system. The thyroid gland manufactures hormones that regulate the body's metabolism and there are several disorders that can arise when the thyroid produces too much hormones or not enough hormones. The most common Thyroid Disorders are Hashimoto's disease, Graves' disease, goiter, and thyroid nodules. Some of the common signs of Thyroid Disorders are mild weight gain, irregular menstruation, enlarged thyroid, hand tremors and other such signs. An Endocrinologist diagnoses Thyroid Disorders by initially testing the level of thyroid-stimulating hormone (TSH) and later, performing a blood test to check for the increased levels of TSH. Often, the doctor can perform an ultrasound of the thyroid to check for swelling or nodules.