Woman in profileSpeaking on BBC Radio 4′s Autism Curve this month, Francesca Happé, a professor of cognitive neuroscience at King’s College London, said: “An increasing number of people are choosing to self-identify [as neurodivergent] without seeking a diagnosis.”As a result, she says, “we may well already be at a point where there are more neurodivergent self-identified people than neurotypical people.”  ADHD UK says only one in nine people believed to have ADHD are diagnosed. The National Autistic Society shares that roughly 750,000 autistic adults in the UK may also be missing a formal diagnosis.But while some clinicians have noticed more attempts to “self-diagnose” online, a 2025 study found that only 27% of the top TikTok videos on au