The cause of long-term yellow urine foam

Male long-term yellow urine, foam, there are several cases can cause long-term yellow urine foam: first, the most common reason is to drink less water, resulting in urine concentration, inorganic salt concentration is too high to cause yellow urine, urine foam. Morning this phenomenon is more common, and urine foam increase is the kind of relatively large foam, generally lasting a few minutes to ten minutes will dissipate, after drinking more water urine color will return to normal. Second, all kinds of chronic nephritis caused by urine protein, at this time for fine small foam for a long time does not dissipate, need to go to the hospital to further check urine routine, renal function, urinary system color Doppler ultrasound. Third, hepatobiliary system diseases or hemolytic diseases caused by yellow urine, at this time in addition to yellow urine, there may be skin scleral jaundice, need to go to the hospital to hang digestive internal medicine to further check liver function, or liver color Doppler ultrasound.