Algorithm for classification of paediatric diabetes based on the presence or absence of autoimmunity and insulin sensitivity. Secondary causes of diabetes include steroid-induced diabetes and cystic fibrosis-related diabetes. Other genetic causes of diabetes include lipodystrophy, mitochondrial diabetes, etc. IA-2A, insulin antigen-2 autoantibodies; IAA, insulin autoantibodies, ZnT8A, zinc transporter 8 autoantibodies. Modified from [58] with the permission of American Diabetes Association. © 2014 American Diabetes Association.