Attention-Deficit/Hyperactivity Disorder (ADHD) in adults is a neurodevelopmental condition marked by persistent patterns of inattention, impulsivity, and/or hyperactivity that interfere with daily functioning. While often first diagnosed in childhood, symptoms can continue into adulthood and affect work performance, relationships, emotional regulation, and self-esteem. Common adult presentations include disorganization, difficulty sustaining attention, procrastination, restlessness, and impulsive decision-making. Effective treatment focuses on improving self-management, planning, and emotional regulation through structured, skills-based interventions.