Endocrine diseases are disorders of the endocrine system. Endocrine disruptors are chemicals that interfere with the endocrine (hormone) system. Tumors of endocrine tissues may overproduce certain hormones. Congenital adrenal hyperplasia is a genetic disease produced by dysregulation of endocrine control mechanisms. A number of endocrine diseases involve dysfunctions of the adrenal gland. Cortisol is an adrenal steroid hormone that is required for normal endocrine function. Enteroendocrine cells are specialized cells of the gastrointestinal tract and pancreas with endocrine function. Forms of dwarfism associated with the endocrine system may be treated using hormonal therapy. Vishuddha is often associated with the thyroid gland in the human endocrine system. Tumors can also develop in organs and tissues other than endocrine glands. The pancreas has both an endocrine and a digestive exocrine function. The pancreas is an organ of the digestive system and endocrine system of vertebrates. Hormonal contraception refers to birth control methods that act on the endocrine system. There are several types of pancreatic cancer, involving both the endocrine and exocrine tissue. Acquired clitoromegaly may also be caused by pathologies affecting the ovaries and other endocrine glands.