This book primarily focuses on providing up-to-date information regarding thyroid and parathyroid diseases. This book has been compiled to meet the needs of those interested in obtaining information on basic, clinical, psychiatric and laboratory concepts. It also sheds light on surgical procedures associated with thyroid and parathyroid glands. It is an in-depth account dealing with various aspects of these diseases, detection and remedy, given the prominence that has been gained by ailments resulting from the excess or lack of secretions from the glands and due to the fact that thyroid related ailments have been found to be hereditary. It presents an overview on the basic and clinical facets of latest discoveries regarding thyroid gland and its diseases, psychiatric challenges which occur during clinical practice and managing these diseases with new technologies. It will be a valuable source of reference for medical practitioners, researchers and students on insights regarding thyroid and parathyroid diseases.