What are the early symptoms of chronic nephritis in children?

What are the early symptoms of chronic nephritis in children? Most of the children with chronic nephritis are glomerulonephritis that is caused by primary or secondary disease, some of them developed from acute nephritis. The disease often last over one year and manifests edema, blood urine, foamy urine in the early stage.
Symptom of chronic nephritis in children: palpebral edema.
The edema is often caused by damaged regulatory function of kidney. The dysfunction leads to the increase of water and sodium in body and they are stored in tissue, which makes edema happen.
Symptom of chronic nephritis: blood urine.
Blood urine is a common symptom of chronic nephrites in children. There are two kinds of hematuria―gross hematuria and microscopic hematuria. The color of gross hematuria is dark brown and can be seen by naked eyes. If there is something unusual with urine, then the parents should take the child to hospital and have some test.
Symptom of chronic nephritis: foamy urine.
There are many little types of foam and take a long time to disappear, which indicate there is protein in urine.
Symptom of chronic nephritis: poor appetite
With Chronic Nephritis, children may also suffer from poor appetite. They have no appetite even if when they face their favorite foods.
Cold and infection are the leading two risky factor for Chronic Nephritis in children. Therefore, helping children to prevent cold and infection is very important for preventing the occurrence of Chronic Nephritis.