When the patient is resistant or allergic to insulin.
D003920:Diabetes Mellitus / Q000188:drug therapy*; D004342:Drug Hypersensitivity; D006801:Humans; D007328:Insulin / Q000009:adverse effects* / Q000627:therapeutic use; D007330:Insulin Antibodies; D007333:Insulin Resistance; D011241:Prednisone / Q000627:therapeutic use
D007328:Insulin; D007330:Insulin Antibodies; D011241:Prednisone