Necrobiosis lipoidica diabeticorum is a rare skin disorder, usually co
nsidered a marker for diabetes mellitus. More than half of the patient
s with necrobiosis lipoidica diabeticorum have diabetes mellitus, but
less than one per cent of diabetes mellitus patients have necrobiosis
lipoidica diabeticorum. In the diabetes and dermatology literature, we
find the position that there is no effect of glucose control on eithe
r the appearance of necrobiosis lipoidica diabeticorum or the clinical
course of the lesion. We base our challenge to this position on a cri
tical review of the original data. And conclude on the contrary, that
necrobiosis lipoidica diabeticorum is usually associated with poor glu
cose control and that tighter glucose control, as currently practised,
might improve or prevent the disorder.