Reflux by itself is not a serious problem, does not cause infection, and does not cause renal damage. Reflux is considered important to manage, because of its association with urinary infection, and thereby renal scarring, hypertension
, or even renal failure. The greater the degree of reflux, the greater are the chances of the kidneys being affected. The grade of reflux can be assessed by doing an MCU
, and is graded from I (mild) to grade V (severe). Most of the time, grade I and II VUR (mild) will resolve by itself, as the child grows. Grade III to V are less likely to resolve on their own. The chances of reflux resolving by itself, are inversely proportional to the grade of reflux, the age at detection, and associated bladder and bowel dysfunction.