I didn’t read your first post but I can tell you that my daughter did not grow hair until she was over 2 years old. She still has very thin hair at 7 years. She is blond, I don’t know if that matters. I have medium thickness of hair as does my husband. My daughter’s hair grows very slowly. I have only had it trimmed about 3 times and it is just barely past her shoulders. I have asked her endo about this but she did not think that this was due to CAH. I wonder though... I would be interested to know if you find a link . By the way I didn’t see your original post. Julia