Person with autism, person with an autistic spectrum disorder, person who is on the autism spectre

Opinions vary on how to refer to someone with autism. Some people with autism prefer being referred to as “autistic” or as an “autistic person.” Others object to using autistic as an adjective. When in doubt, it is best to ask the person how they would prefer to be referred to.

As for the euphemism “Rain man”, which became popular after the release of then film of the same name, it’s also inappropriate and we advise against using it in day-to-day life.