October is ADHD Awareness Month, and the 2017 theme is “Knowing is Better: ADHD Across the Life Span.” That has brought attention to the need for biomarkers to distinguish what physical traits can help identify those with attention-deficit/hyperactivity disorder. A study published earlier this year has received notice for being the first to uncover the macro- and microstructural changes in the brains of young adults with ADHD.