My daughter, who is 4, used to have problem with her skin too, when she was on Cortef. They were all over her body, almost, and they were like goose bumps that never went away. She has been on Prednisolone, which could be used to treat skin conditions also, for two months. They bumps went away. CAH could be the cause of the skin problem. My daughter had had it since she was a baby, before she was diagnosed with CAH.