[Early-morning hyperglycemia in patients with diabetes mellitus types 1 and 2].

Early morning hyperglacaemia occurs in type I and II diabetes, and is characterized by increasing blood glucose level and/or increased requirements for insulin in early morning hours without preceding hypoglycaemia. The frequency and repeated appearance of the disturbance are not known, completely and no occlusions could be reliably put forward concerning the role of hormonal insulin antagonists. Early morning hyperglycaemia makes difficult the control of blood glucose level later on, especially in the hours 3.30-7.00. It has been observed with each type of therapy, but it can be controlled by corrections of the dose and type of the injected insulin and dosage timing.