Can you please suggest treatment for nephrotic syndromes in children?

Be Proactive. As the parent of a child with a complicated disease like nephrotic syndrome find the best pediatric nephrologist you can. They are usually found at children's hospitals to confirm the diagnosis and initiate treatment, usually steroids. There are many types of nephrotic syndrome so a good initial evaluation is important. See http://www.Nephcure.Org/nephrotic-syndrome-facts.