diabetes%20mellitus
DIABETES MELLITUS
Diabetes mellitus (DM) is a heterogenous metabolic disorder characterized by the presence of hyperglycemia with carbohydrate, protein and fat metabolism disturbance which results from defects in either insulin secretion or action.
Patients with DM usually present with polyuria, polydipsia and unexplained weight loss.
Type 1 DM is caused by beta cell destruction which leads to complete insulin deficiency. It may be immune mediated or idiopathic.
Patients may present with ketoacidosis or acute onset of hyperglycemia while other patients may resemble type 2 DM or symptoms of other autoimmune disorders.
Type 2 DM is the most common form of diabetes. It is secondary to defect in insulin secretion concomitant with insulin resistance.
Majority of patients are asymptomatic. Ketoacidosis is uncommon and is usually secondary to stress (eg infection).
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