Why are so many adults being diagnosed with ADHD?

Matilda Boseley was 23 when she was diagnosed with ADHD after viewing countless videos on Tik Tok about the condition. With the diagnosis came relief, but also a lot of unanswered questions: why are so many adults only discovering they have ADHD now? And why are girls so often overlooked when it comes to diagnosis? Matilda Boseley speaks to Laura Murphy-Oates about her new book The Year I Met My Brain You can support the Guardian at theguardian.com/fullstorysupport