What is the mildest form of autism?

The phrase mildest form of autism is not an official diagnostic term, but it is sometimes used informally to describe autistic people who need less support in daily life. In the DSM-5, autism spectrum disorder is diagnosed with levels of support needs, Level 1 requiring support, Level 2 requiring substantial support, and Level 3 requiring very substantial support, rather than mild to severe labels. What some people call mild may correspond to Level 1, where a person speaks fluently, has average or above average intellectual abilities, and can live independently but still experiences challenges with social communication, executive function, sensory sensitivities, and adapting to change, often with significant effort such as masking. Historically, terms like Asperger's syndrome or high functioning autism were used, but those terms are no longer used in current diagnostic manuals in many countries. Functioning can also vary by situation, so someone may appear to need little support at work but need more support at home due to burnout. It is important to remember that less visible support needs do not mean no support needs, and each person's experience is individual. For accurate information and support planning, a professional evaluation by a psychologist or psychiatrist can be helpful.