Nephrotic syndrome is a condition of the kidneys that causes the body to excrete too much protein with the urine. The rare disorder affects roughly 200,000 people a year and is chronic, which means it can last for years at a time.
Foamy urine is one of the most common symptoms of nephrotic syndrome and happens because of the amount of protein in the stream. People with the condition may also notice severe swelling around the eyes, feet, and ankles due to excess fluid. Fatigue and loss of appetite are other common symptoms of nephrotic syndrome, as is weight gain -- again due to fluid retention. A person who notices any of these symptoms in conjunction should see a doctor.
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