If you haven't been diagnosed before, part of the assessment is hearing from someone who has known you a long time — a partner, close friend, parent, or former teacher. They complete a short standardized questionnaire about how things have shown up for you over the years.
Why we do it: ADHD starts in childhood, and most adults have spent years getting good at hiding it. One appointment can only show so much. An outside perspective is what separates a quick guess from an assessment you can rely on.