Adults With Attention Deficit Hyperactivity Disorder (ADHD) As An adult, individuals have a variety of roles and responsibilities which require focus, attention and organization. Undiagnosed ADHD could make it difficult for people to handle certain duties. This could have a negative impact on their lives and result in low self-esteem. https://www.iampsychiatry.uk/adult-adhd-assessments-and-treatments/