Adult ADHD – attention deficit hyperactivity disorder – is in the spotlight on social media as more adults and celebrities admit to having it.

Interest is high: there are over 190,000 posts on Instagram with the hashtag #adultadhd. A YouTube video, “ADHD & How Anyone Can Improve Their Focus,” by popular American neuroscientist Andrew Huberman, has had more than 6.4 million views in the three years since it was posted.

Medical guidelines only officially recognized the disorder in adults in the early 2000s.

You might think they develop into adults later in life. But that’s not the case, says Dr Sally Cubbin, neuropsychiatrist and founding member of UKAAN, the UK Adult ADHD Network. He runs one of the best-known ADHD clinics in the UK, which focuses specifically on adults with the disorder.

Most children with ADHD become adults with ADHD, she says.