Autism has almost certainly been part of human neurodiversity for as long as humans have existed, but it has only been named and formally recognized in the last century or so.

Quick Scoop

  • The word “autism” was first used in 1911 by psychiatrist Eugen Bleuler, but he used it to describe a symptom seen in schizophrenia, not what we now call autism.
  • The first clear medical description of autism as its own condition came in 1943, when Leo Kanner wrote about “early infantile autism” in 11 children.
  • In 1944, Hans Asperger described a similar pattern in children later called “Asperger syndrome.”
  • Autism did not become an official stand‑alone diagnosis in major manuals until 1980, when “infantile autism” was added to the DSM‑III (the main psychiatric diagnostic handbook).
  • By 1994, autism was formally treated as a spectrum of related conditions, which is how it is understood today.

Many autistic people and researchers emphasize that autistic traits—like deep focus, different social styles, and intense interests—are part of natural human variation and likely existed in all past societies, even though people didn’t have the word “autism” for it.

Has autism “always been around”?

From a scientific and community perspective, the answer is effectively yes :

  • Autism is strongly linked to genetics and early brain development, not something that suddenly appeared in recent decades.
  • Population studies and twin research from the 1970s onward showed clear biological and genetic influences, which helped overturn older ideas that blamed parenting.
  • Modern discussions often push back against the myth that “autism didn’t exist when I was a kid”; rather, it was usually misdiagnosed, ignored, or described with other labels.

A useful way to think about it: people with autistic traits have almost certainly existed for thousands of years, but the medical category “autism spectrum disorder” is only about 80 years old, and the current spectrum concept is only about 30 years old.

Brief timeline (for context)

  • 1911 – Term “autism” introduced by Bleuler, but tied to schizophrenia.
  • 1943 – Kanner publishes the first detailed medical description of “early infantile autism.”
  • 1944 – Asperger describes what becomes known as Asperger syndrome.
  • 1970s – Strong evidence accumulates that autism is biological and rooted in brain development, not caused by parenting.
  • 1980 – DSM‑III lists “infantile autism” as a distinct diagnosis for the first time.
  • 1994 – DSM‑IV introduces autism as a spectrum of related conditions.

So when you ask “how long has autism been around,” the short, honest answer is:

  • As a human neurotype: likely as long as humans have been around.
  • As a recognized diagnosis: about 80 years, with today’s spectrum concept taking shape over the last 30 years.

Information gathered from public forums or data available on the internet and portrayed here.