This document discusses diabetes mellitus in pregnancy. It covers the classification of diabetes in pregnancy, the effects of pregnancy on diabetes and diabetes on pregnancy, diagnosis through history, investigations like glucose tolerance tests, management through frequent visits, controlling blood sugar levels, hospitalization if needed, evaluating fetal well-being, delivery planning, and neonatal care. Pregnancy increases the risk of complications for both the mother and fetus if a woman has preexisting or gestational diabetes. Close monitoring and medical management are important for optimal outcomes.