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Etiologic Classification of Diabetes Mellitus
- Type 1 diabetes* (ß-cell destruction, usually leading to absolute insulin deficiency)
- Immune mediated
- Idiopathic
- Type 2 diabetes* (may range from predominantly insulin resistance with relative insulin deficiency to a predominantly secretory defect with insulin resistance)
- Other specific types
- Genetic defects of ß-cell function
- Chromosome 12, HNF-1
(formerly MODY3)
- Chromosome 7, glucokinase (formerly MODY2)
- Chromosome 20, HNF-4
(formerly MODY1)
- Mitochondrial DNA
- Others
- Genetic defects in insulin action
- Type A insulin resistance
- Leprechaunism
- Rabson-Mendenhall syndrome
- Lipoatrophic diabetes
- Others
- Diseases of the exocrine pancreas
- Pancreatitis
- Trauma/pancreatectomy
- Neoplasia
- Cystic fibrosis
- Hemochromatosis
- Fibrocalculous pancreatopathy
- Endocrinopathies
- Acromegaly
- Cushing's Syndrome
- Glucagonoma
- Pheochromocytoma
- Hyperthroidism
- Somatostatinoma
- Aldosteronoma
- Others
- Drug- or chemical-induced
- Vacor
- Pentamidine
- Nicotinic acid
- Glucocorticoids
- Thyroid hormone
- Diazoxide
- ß-adrenergic agonists
- Thiazides
- Dilantin
-Interferon
- Others
- Infections
- Congential rubella
- Cytomegalovirus
- Others
- Uncommon forms of immune-mediated diabetes
- "Stiff-man" syndrome
- Anti-insulin receptor antibodies
- Others
- Other genetic syndromes sometimes associated with diabetes
- Down's syndrome
- Klinefelter's syndrome
- Turner's syndrome
- Wolfram's syndrome
- Friedreich's ataxia
- Huntington's chorea
- Lawrence Moon Beidel syndrome
- Myotonic dystrophy
- Porphyria
- Prader Willi syndrome
- Others
- Gestational diabetes mellitus (GDM)
*Patients with any form of diabetes may require insulin treatment at some stage of their disease. Such use of insulin does not, of itself, classify the patient.
Reproduced By Permission American Diabetes Association (18)
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