Nephrotic Syndrome is a kidney disorder characterized by excessive protein loss in the urine, leading to low protein levels in the blood. This condition often results in swelling, particularly in the legs and around the eyes, due to fluid retention. It can be caused by various factors, including diabetes, lupus, or infections. Diagnosis typically involves urine tests to measure protein levels, blood tests to assess kidney function, and sometimes a kidney biopsy. Treatment focuses on managing symptoms and underlying causes, often using medications like corticosteroids and diuretics to reduce swelling and protein loss.