Adult ADHD (Attention-Deficit/Hyperactivity Disorder) is a mental health disorder characterized by persistent problems such as difficulty paying attention, impulsiveness, and restlessness that continue from childhood into adulthood. Symptoms can vary but often include trouble focusing, disorganization, poor time management, impulsivity, mood swings, and difficulty completing tasks. Adults with ADHD may experience challenges in work, relationships, and daily functioning, although hyperactivity often decreases with age while inattention and impulsiveness persist. Treatment usually involves medications, psychotherapy, and strategies for managing symptoms.