Hi Julane, I have read that kidney reflux is hereditary but no one in my family (besides my daughter) has it but me. I really was a little concerned about my daughter and wanted to get her checked out, I figured maybe around two years old would be time enough to tell if she did have reflux. One day I asked my doctor about the chances of her getting it, and he said to get her checked out, if she does have it and is not on antibiotics her kidney could be damaged. I spoke with her pediatrician, explained to him my concerns and that I wanted her checked. In January at 12 months old, she had a VCUG performed and sure enough, I could see she had reflux. She is on medicine, one teaspoon a day to prevent kidney infections. We are hoping she may grow out of it, but if not we caught it in time to have surgery performed if needed with little to no scarring of her kidneys. On the other hand being I had been the only one in my family to have reflux, my parents did not catch it in time, was diagnosed at age three and by that time considerable damage was done to my left kidney. You need to follow your gut feeling and demand that he gets checked and if your doctor wonít work with you, go to another one. I have had that problem this past year, one doctor after another and now I finally found one that will work with me. I wish you and your family the best and sometimes you have to be demanding to get things done.