if your other children have it, then he should definately be tested. From what I know CAH wouldn’t cause learning disabilities. It is usually the opposite with any cah child But not al. There are the exception. My girl is in the 5th and is on a 7th grade level. My noncah son is is also advanced. So I can’t say that the CAH made a difference. I hope everything goes well for you, please keep the other child updated with the doc. How old are your children? Take care