Considerations regarding the diagnosis and treatment of childhood type 2 diabetes.

The prevalence of diabetes among children and adolescents has been steadily increasing, making it even more important that diabetes be adequately managed in this patient population. A basic distinction between type 1 and type 2 diabetes has long been understood. Type 1 diabetes results from a primary loss of pancreatic insulin production, usually as a consequence of autoimmune destruction of pancreatic cells; in type 2 diabetes, insulin production continues and may even be exaggerated, but is insufficient to adequately compensate for resistance to insulin action, leading to the loss of glycemic control. Regardless of the type of diabetes, the treatment goal is to control hyperglycemia. However, the optimal treatment strategy depends on the underlying cause of hyperglycemia. It is therefore important to accurately diagnose whether a patient has type 1 or type 2 diabetes. Historically, this has been thought possible based on the different clinical presentations and age of onset of the conditions. More recently, with the increasing prevalence of type 2 diabetes among adolescents and the trend toward a more obese society, the distinction has become less clear. This has led to the need for the differential diagnosis of diabetes to be confirmed using biochemical and immunological testing. In addition, because the prevalence of type 2 diabetes in the pediatric population is a relatively new phenomenon, available treatments for type 2 diabetes have been studied predominantly in adult populations. With type 2 diabetes becoming increasingly common in pediatric centers, there is a need to evaluate the optimal treatments for children and adolescents.