I guess I got wrong info then. I was told they had it from hatch but that it was more or less noticeable. Thanks!
And I do agree that when we can't figure something out in healthcare, we do tend to say, "oh, it's autoimmune." It serves several purposes. One is the patient or owner wants a reason, and the other is it gives us an excuse to give steroids, and corticosteroids usually seem to make vertebrates feel better even though they are often detrimental.