[Self-inflicted hypoglycaemia (three cases)]

A woman with normal metabolism but addictive tendency injected insulin, as was proven by the presence of insulin antibodies in serum. Another woman with a normal metabolism caused hypoglycaemia by taking sulphonylurea preparations, apparently from self-destructive motives. After all laboratory and other tests had at first pointed to organic hyperinsulinism, the diagnosis of self-inflicted hypoglycaemia was finally made by demonstrating the drug in plasma. A young diabetic who required insulin caused hypoglycaemia by injecting additional insulin. The complete absence of C-peptide and especially the strict supervision confirmed the diagnosis.