Ah yes, the
simple test.
Twenty five years ago I was being destroyed by sleep apnea. My family doctor told me I didn't look like I had sleep apnea - not fat. And not long ago my wife's friend's husband, who has severe sleep apnea, was told by the local yokel (MD) that all he had to do was lose a bit of weight.
Sheesh. Reminds me of
A Simple Plan.
See also
here , for some references on autism on another thread.