HELLP stands for Hemolysis, Elevated Liver enzymes, and Low Platelets. Hemolysis is the abnormal breakdown of red blood cells, elevated liver enzymes appear when there is liver irritation or other liver involvement because of the disease process of preeclampsia. Low platelets means your blood won't clot properly, which is also a serious problem and can cause internal bleeding, or bleeding during delivery that is difficult to stop. You can have all of these issues, or just one or two and it could be considered HELLP syndrome. HELLP is actually quite rare (even though it doesn't seem rare, given the number of ladies on here who have had it).