Hello,we are all born with CAH whether it's classical or nonclassical. Which does your sister have? If she has late onset nonclassical you might want to check out the late onset message board and go from there. I hope this has helped, the late onset board can be a big help. I have nonclassical and I'm an adult. We are different from the classical and have are own set of issues. You can get on the message board by clicking on the last listing on the left in yellow. If she has classical you are on the right list. good luck and peace