yes, i agree that it has been around alot longer than the vietnam war, but there is a theory that CAH has been linked to Agent Orange.  it is ONLY a theory and not mine but wanted to do a study to see if there really could be a link to Agent Orange.  My father was exposed to Agent Orange before i was born and the VA dr told him that my symptoms are also symptoms of Agent Orange.  I also have a smaller than usual brain stem and the VA dr told him that that is also Agent Orange related.  Just curious if the dr is not WAY out there on this one.  So i decided to do a study of my own.  there do seem to be quite a few people with CAH that have relatives that could have been exposed to Agent Orange.