Professor Ahmed Hankir on Instagram: "Is this the WORST ADHD symptom? Many people think ADHD is just about focus, restlessness, or impulsivity. But for many adults with ADHD, one of the most painful experiences is shame-based rumination — the sudden replay of past mistakes, awkward moments, or impulsive actions from years ago. This isn’t part of the formal diagnostic criteria. It doesn’t show up neatly on rating scales. Yet research shows that ADHD is strongly associated with: • increased rumina