These patients can develop ketoacidosis just like the type 1 diabetic, and they must be treated with insulin injections.

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Ketoacidosis can be fatal unless treated as an emergency with hydration and insulin.

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Mr Fellows later died from diabetic ketoacidosis.

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The charity says this is one reason why a quarter of children with type 1 diabetes are only diagnosed once they are already seriously ill with diabetic ketoacidosis (DKA), a life threatening condition that needs immediate specialist treatment in hospital.

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