cinbad wrote:
In humans, "disease" is often used more broadly to refer to any condition that causes pain, dysfunction, distress, social problems, or death to the person afflicted,
Yes, but it has connotations that aren't correct for autism.
A "disease" is thought of as something that throws the body off-balance, something that is either temporary and can be cured, or something that damages someone who is healthy and normal to begin with.
Autism, on the other hand, is a disability that starts from the fetal period. Autistic people have atypical development. There's nothing to damage because they were different to begin with. So to say "a healthy autistic person" is not an oxymoron; it just means "an autistic person without any illness", just like you might say "a healthy Down syndrome child" or "a healthy student with dyslexia". Autism itself is developmental.
I don't like the connotations of calling autism a "disease", because it implies that I ought not to be that way, that there is a neurotypical "true self" somewhere that I'm trying to get back to, the way I'd try to get back to a healthy self if I had the flu.
To explain this to a neurotypical, you might say something like, "Hey, autism isn't a disease; we're not sick. We're different, we have a disability, but we're not sick." Just like a short person is not a sick tall person, an autistic person is not a sick neurotypical.