Polyendocrine autoimmune syndrome (PAS) is a group of conditions in which the body's immune system mistakenly attacks multiple endocrine glands, resulting in a variety of symptoms. Types of PAS include type 1, type 2, type 3, type 4, type 5, type 6, type 7, type 8, type 9, type 10, type 11, type 12, type 13, type 14, and type 15. Type 1 PAS is characterized by the presence of Addison's disease, vitiligo, and type 2 diabetes. Type 2 PAS includes Graves' disease and Hashimoto's thyroiditis. Type 3 PAS includes Addison's disease, type 1 diabetes, and hypoparathyroidism. Type 4 PAS is characterized by the presence of chronic mucocutaneous candidiasis, hypoparathyroidism, and type 1 diabetes. Type 5 PAS includes Addison's disease, hypogonadotropic hypogonadism, and autoimmune alopecia. Type 6 PAS is characterized by the presence of Addison's disease, hypothyroidism, and hypoparathyroidism. Type 7 PAS includes Addison's disease, hypogonadotropic hypogonadism, and pernicious anemia. Type 8 PAS includes Addison's disease, autoimmune thyroiditis, and type 1 diabetes. Type 9 PAS is characterized by the presence of Addison's disease, vitiligo, and type 1 diabetes. Type 10 PAS includes Addison's disease, hypoparathyroidism, and hypothyroidism. Type 11 PAS includes Addison's disease, hypoparathyroidism, and type 1 diabetes. Type 12 PAS includes Addison's disease, hypothyroidism, and autoimmune alopecia. Type 13 PAS is characterized by the presence of Addison's disease, type 1 diabetes, and pernicious anemia. Type 14 PAS includes Addison's disease, Graves' disease, and Hashimoto's thyroiditis. Type 15 PAS is characterized by the presence of Addison's disease, chronic mucocutaneous candidiasis, and type 1 diabetes.