[Hypoglycaemia unawareness: judge driving ability prudently].

Several factors can influence the ability to drive by patients with diabetes mellitus. The most important factor would be hypoglycaemia. It seems logical that hypoglycaemia unawareness would be an important risk factor for accidents. However, in everyday practice, hypoglycaemia-related accidents are rare. Moreover, it seems that only a small subset of people with diabetes is responsible for the overall slightly elevated risk of car accidents. It appears that not hypoglycaemia unawareness itself is a risk factor, but primarily a history of previous hypoglycaemia-related accidents. Although ascertaining hypoglycaemia awareness currently seems the most suitable method for the assessment of driving ability, this may not be fair. In the future, we hope to have better methods of assessing the risk of accidents. Until that time, we should apply current law prudently, and mainly preclude from driving those diabetic patients who have experienced loss of consciousness or have needed outside help due to hypoglycaemia.