This document summarizes disorders of lipoprotein metabolism. It discusses the characteristic skin lesions seen in various disorders like familial dysbetalipoproteinemia and familial chylomicronemia. It also describes the structure and function of various lipoproteins like chylomicrons, VLDL, LDL, HDL and their receptors. The pathways of lipoprotein metabolism including exogenous and endogenous pathways are outlined. Various disorders affecting these pathways are explained like familial hypercholesterolemia, sitosterolemia, abetalipoprotenemia, Tangier's disease, familial LCAT deficiency. Diagnosis and management of severe hypertriglyceridemia and hypercholesterolemia is also covered