HELLP syndrome is a severe form of preeclampsia characterized by hemolysis, elevated liver enzymes, and low platelets. It occurs in 0.5-0.9% of pregnancies and is diagnosed based on evidence of hemolysis, elevated liver enzymes, and low platelet count. Management of HELLP syndrome depends on disease severity and gestational age, ranging from termination of pregnancy for severe cases to conservative management including blood pressure control, magnesium sulfate to prevent seizures, and corticosteroids to improve platelet and liver function for mild to moderate cases before 34 weeks gestation.