The top 5 people in history who likely had ASD Level One:

Posted by Mark Hutten, M.A.

The top 5 people in history who likely had ASD Level One:

Based on the DSM-5 description of ASD Level One, what are the top 5 people in history who likely had ASD Level One?

It is impossible to diagnose historical figures reliably because no clinician could interview them, assess their childhood development, or determine whether their traits caused clinically significant impairment. “Level 1” also refers to the amount of support a person currently requires—not intelligence, achievement, or how “mild” their autism appears.

Under DSM-5 criteria, autism requires both:

Persistent differences in social communication and social interaction.
Restricted or repetitive behaviors, intense interests, sensory differences, or marked difficulty with change.

The characteristics must have been present during development and must meaningfully affect everyday functioning. Level 1 means “requiring support,” particularly with social communication and behavioral flexibility.

With that caution, these five have among the strongest—though still highly speculative—historical cases:

Henry Cavendish (1731–1810)

Cavendish may be the most compelling candidate. He reportedly avoided nearly all direct social contact, communicated with household staff through written notes, followed extraordinarily rigid routines, dressed the same way for decades, and devoted himself intensely to narrowly focused scientific work. His social difficulties were substantial despite his exceptional intellectual abilities.
Isaac Newton (1643–1727)

Newton demonstrated extreme absorption in his work, prolonged social isolation, difficulty maintaining relationships, interpersonal rigidity, sensitivity to criticism, and episodes of neglecting food and sleep while pursuing a problem. Psychiatric literature has specifically proposed Newton as a possible historical example of what was formerly called Asperger syndrome. The case is plausible, although paranoia, depression, temperament and the effects of his early childhood experiences remain alternative explanations.
Albert Einstein (1879–1955)

Accounts describe delayed speech, repetitive childhood language, preference for solitary activities, resistance to conventional instruction, intense absorption in specialized subjects and some difficulty navigating social expectations. However, Einstein developed close relationships, displayed humor and communicated publicly with considerable skill. If autistic, his presentation would probably be compatible with Level 1, but his case is less convincing than Cavendish’s or Newton’s. Newton, Cavendish and Einstein were all examined as possible autistic historical scientists in a published biographical analysis, although the paper used the older Asperger terminology.
Charles Darwin (1809–1882)

Darwin reportedly preferred solitude, experienced considerable social discomfort, adhered closely to routines and became deeply absorbed in collecting, classification and long-term scientific investigation. Psychiatrist Michael Fitzgerald argued that Darwin’s persistence, intense interests, independence of mind and unusual attention to detail were consistent with an autistic profile. Nevertheless, Darwin’s chronic illness, anxiety and possible panic symptoms offer important competing explanations.
Michelangelo (1475–1564)

Biographical descriptions portray Michelangelo as socially isolated, intensely work-focused, rigid, emotionally difficult to approach and relatively indifferent to ordinary self-care and social convention. His capacity for sustained, highly detailed work was extraordinary. These features have prompted retrospective autism hypotheses, but evidence about his early social development and repetitive behaviors is particularly limited. Personality, artistic obsession, depression and the social conditions of Renaissance life could also explain much of the pattern.

Nikola Tesla is another frequently mentioned candidate because of his rigid routines, sensory sensitivities, visual thinking, intense concentration and social isolation. However, his elaborate rituals, contamination fears and numerical compulsions may fit obsessive-compulsive disorder more directly, so I would place him just outside the five.

The most defensible conclusion is therefore not that these people “had ASD Level 1,” but that Cavendish and Newton present the strongest biographical resemblance, while Einstein, Darwin and Michelangelo show noteworthy but more ambiguous patterns. Historical eccentricity, genius, introversion, trauma, anxiety and obsessive-compulsive symptoms should never be treated as interchangeable with autism. Modern diagnosis depends on developmental history, impairment and the complete pattern—not merely brilliance, solitude or intense interests.