A number of other types of diabetes exist. They make up a very small percentage of the overall number of diabetes.

Other types of diabetes
, include those caused by:
  • Genetic defects of the beta cell—the part of the pancreas that makes insulin—such as maturity-onset diabetes of the young (MODY) or neonatal diabetes mellitus (NDM).
  • Genetic defects in insulin action, resulting in the body's inability to control blood glucose levels, as seen in leprechaunism and the Rabson-Mendenhall syndrome.
  • Diseases of the pancreas or conditions that damage the pancreas, such as pancreatitis and cystic fibrosis.
  • Excess amounts of certain hormones resulting from some medical conditions—such as cortisol in Cushing's syndrome—that work against the action of insulin.
  • Medications that reduce insulin action, such as glucocorticoids, or chemicals that destroy beta cells.
  • Infections, such as congenital rubella and cytomegalovirus.
  • Rare immune-mediated disorders, such as stiff-man syndrome, an autoimmune disease of the central nervous system.
  • Genetic syndromes associated with diabetes, such as Down syndrome and Prader-Willi syndrome.
  • Injury to the head or after brain surgery, such as Diabetes Insipidus.