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Table 3 Classification of the aetiology of hypoglycemia in adults without underlying diabetes [1]

From: IGF-2 mediated hypoglycemia and the paradox of an apparently benign lesion: a case report & review of the literature

Unwell or medicated individual

Seemingly well individual

1. Drugs

Insulin or insulin secretagogues

Alcohol

Glucagon during endoscopy

Quinine

Indomethacin

2. Critical illnesses

Hepatic, renal or cardiac failure

Sepsis (including malaria)

3. Hormone deficiency

Cortisol

Glucagon and epinephrine

4. Non-islet cell tumour

5. Inborn errors of metabolism

1. Endogenous hyperinsulinism

Insulinoma

Functional β-cell disorders (nesidioblastosis)

Insulin autoimmune hypoglycemia

Insulin secretagogue

2. Accidental, surreptitious or malicious hypoglycemia

  1. Table based on Endocrine Society Guideline on Evaluation and Management of Hypoglycemic Disorders [1] and amended to include other causes of hypoglycemia [4]