Attention-deficit/hyperactivity disorder, known widely as ADHD, is one of the most common brain disorders in childhood, affecting peoples’ ability to focus or sit still.
Some 15.5 million American adults live with ADHD and high-profile figures like Olympic snowboarder Chloe Kim, pop singer Justin Timberlake, Spider-Man actor Tom Holland and socialite Paris Hilton have long reported suffering from related symptoms.