What happened to foam in urine?

The reasons why urine shows foam are as follows: First, patients with kidney disease will show foam urine. It is more common in patients with nephrotic syndrome, glomerulonephritis or diabetic nephropathy, because there will be more protein in the urine of such patients, so it is shown as foam urine, and these foams generally cannot disappear by themselves after standing. Second, some men in the solution of urine, because urine falls from a height, will show temporary foam urine, this foam will generally disappear after standing, there is no impact on the body, do not need treatment.