Sorry that I don’t know the answer to your first question. I don’t know what the odds are of siblings having different kinds of cah. My son is younger than my daughter. I had the stim test done on both of my children when I found out that the condition is genetic. I have locah, therefore they would have had to be at least a carrier. My daughter’s stim test reached locah range and my son’s reached to carrier range.

 Be aware that when they do genetic testing they may not find a gene at first, I suppose a stim test would be the best route. Also I have read of some having classic cah and not being treated till they were a few years old. If you read the cares newsletter, there are stories about such.

 You will need to be aware if your son is a carrier, since we are discovering that some carriers manifests symptoms. I want to be able to help my son in any way that I can. With my daughter I kind of know what to look for, with him....it’s just wait and see I guess. Take care