Hi, i have a little girl of two who is going through tests as they think she has precocious puberty. One of the tests she needs is one for congenital adrenal hyperplasia so here i am looking stuff up on the web and come across this web site. Now my daughter will need a brain scan depending on the results of all the other blood tests and scans she is having. I am assuming that the brain scan the child is having is just a precaucionary measure and so dont worry to much about it, i know it is hard but once you understand all the tests they do to diagnose properly u see why they need to check absolutley everything.