General Consideration Diabetes mellitus complicating pregnancy Diabetes mellitus is diagnosed before this pregnancy Gestational diabetes mellitus (GDM) Carbohydrate intolerance of varying degree of severity with onset or first recognition during pregnancy. Incidence 1%0-2%(our country); 1%0-10%(other countries)General Consideration • Diabetes mellitus complicating pregnancy Diabetes mellitus is diagnosed before this pregnancy • Gestational diabetes mellitus (GDM) Carbohydrate intolerance of varying degree of severity with onset or first recognition during pregnancy. • Incidence 1%-2% (our country); 1%-10% (other countries)