Injury to tiny vessels is more often associated with type 1 diabetes but also occurs in other classes of diabetes. Damaged vessels lead to retinopathy, nephropathy, and neuropathy. Diminished eyesight, blindness, renal disease and renal failure can occur in a diabetic patient who does not maintain good carbohydrate control and can occur in a diabetic with good control because of the harm done to the vessel linings. Neuropathy results in pain, numbness, tingling, dizziness, decreased nerve conduction and can progress to cardiac disease and failure.
