Adults With Attention Deficit Hyperactivity Disorder (ADHD) As Adults, we have a variety of roles and responsibilities that require focus, attention as well as organisation and calm. Undiagnosed ADHD could cause people to handle certain obligations. This can have a negative impact on their lives and result in low self-esteem. https://www.iampsychiatry.uk/adult-adhd-assessments-and-treatments/