Adults With Attention Deficit Hyperactivity Disorder (ADHD) As Adults, we have many responsibilities and roles that require focus, concentration, organisation and composure. A person with undiagnosed ADHD might struggle with a few of these duties. This can impact their life and cause low self-esteem and confidence issues. In the UK, https://www.iampsychiatry.uk/adult-adhd-assessments-and-treatments/