Childhood nephrotic syndrome is a kidney condition that causes protein to leak into the urine, resulting in swelling and other symptoms. It's also known as nephrosis.
Swelling in the face, legs, hands, abdomen, or other parts of the body
Foamy urine
Fatigue
Blood in the urine
Loss of appetite
Muscle cramps
Diarrhea or nausea
Sudden weight gain
Causes Kidney disease, Infections, Some medicines, and Genetics.