What are the symptoms of high urine protein?

High protein levels in urine typically present as increased foam in the urine, with small bubbles persisting for a long time. Some individuals may experience facial, upper limb, or lower limb edema, and may also have symptoms such as nausea and vomiting. In more severe cases, persistent elevation of urinary protein can damage kidney function, leading to acute kidney failure, resulting in oliguria or anuria, and even electrolyte imbalances.