[Excerpt] However, while research has clarified many aspects, unresolved issues and controversies surrounding adult ADHD continue to emerge. In this paper, we summarize the empirical evidence, as well as the uncertainties and controversies, related to the definition, epidemiology, diagnosis, etiology, neurobiology, and management of ADHD in adults. Importantly, we also present the views of representatives from associations of individuals with lived experience, focusing on their perceptions of key unmet needs and priorities for adults with ADHD.