Final answer:
Nephrotic syndrome is a kidney condition characterized by increased glomerular permeability, protein loss in urine, altered renal function causing edema, as well as immune system dysfunction and genetic predisposition.
Step-by-step explanation:
Nephrotic syndrome is a condition in which the glomerulus, a part of the kidney, becomes damaged. This leads to an increase in glomerular permeability, causing a large amount of protein in the blood to enter the urine. One of the frequent features of nephrotic syndrome is edema, which is caused by altered renal function. Immune system dysfunction and genetic predisposition can also contribute to the development of nephrotic syndrome.