Different forms of diabetes mellitus Different Forms of Diabetes mellitus General-genetic and other factors not precisely Diabetes secondary to pancreatic disease defined Chronic pancreatitis Type 1 diabetes mellitus(formerly called insulin Su urger dependent diabetes mellitus, or IDDM) Tropical diabetes(chronic pancreatitis associated Autoimmune type 1 diabetes mellitus(type 1A) with nutritional and/or toxic factors) Non-autoimmune or idiopathic type I diabetes Diabetes secondary to other endocrinopathies mellitus(type 1B) Cushing' s disease ype 2 diabetes mellitus(formerly called non-insulin- Glucocorticoid administration dependent diabetes mellitus or NIDDM) Acromegaly Specific-defined gene mutations Diabetes secondary to immune suppression Maturity-onset diabetes of youth MODY) Diabetes associated with genetic syndromes; e.g MODY 1 hepatic nuclear factor 4a gene mutations Prader-Willi syndrome ModY 2 glucokinase gene mutations ModY 3 hepatic nuclear factor la gene mutations Diabetes associated with drug therapy(see Table 61-5) MODY 4 pancreatic determining factor x gene mutations MODY X unidentified gene mutation(s) Maternally inherited diabetes and deafness Midd) Mitochondrial leucine tRNa gene mutations Insulin gene mutations Insulin receptor gene mutations