I did a quick search and came up with this informational page :
http://www.radkid.org/index.html
From what I read I think that this disorder would preclude a dog with the needs of a Rottweiler.
Rottweilers as a breed are "high maintenance" themselves. While they are loving loyal dogs they require a firm and consistant environment to be a successful part of any family.
Depending on how severely your child is affected I am not sure how you could do all the structure required for your son AND a Rottweiler at the same time.
There is lots to read and learn here.