Diabetes mellitus is caused due to lack or diminished effectiveness of endogenous insulin and is characterised by hyperglycaemia.There are two broad types:-Type I: This is known as insulin-dependent diabetes mellitus (IDDM). It is characterised by insulin deficiency. Usually it has juvenile onset but may occur at any age. Patients are prone to ketoacidosis and weight loss.Type II: This is known as non insulin-dependent diabetes mellitus (NIDDM) or maturity onset diabetes mellitus. It occurs in middle aged/ older people who are often obese. Ther....

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