Type 1 Diabetes Mellitus

Diabetes Mellitus is subdivided into insulin-dependent diabetes mellitus (IDDM, type I diabetes) and non-insulin-dependent diabetes mellitus (NIDDM, type II diabetes).

Type 1 diabetes is an autoimmune disease, in which the destruction of the insulin-producing beta cells of the pancreatic islets of Langerhans results in a deficiency of insulin. Seen almost entirely in individuals under the age of 30 years, it has a peak age of onset between 10 and 14 years. It occurs predominantly in whites and has a prevalence of approximately 0.2-25% in both the USA and Europe. The incidence of this disorder has increased slightly over the past 50 years.


As in all diagnostic testing, the diagnosis is made by the physican based on both test results and the patient history.