Attention-deficit/hyperactivity disorder (previously known as attention deficit disorder or ADD) is a neurobehavioral disorder characterized by core symptoms of inattentiveness, distractibility, hyperactivity, and impulsivity. ADHD is thought to be the most common childhood mental health disorder, with estimates of its prevalence in children ranging from 5 to 11 percent. ADHD in adulthood is thought to be less common, with approximately 2 to 5 percent of adults diagnosed.| Psychology Today
Bipolar disorder, also known as manic depression, is a chronically recurring condition involving moods that swing between the highs of mania and the lows of depression. Depression is by far the most pervasive feature of the illness. The manic phase usually involves a mix of irritability, anger, and depression, with or without euphoria. When euphoria is present, it may manifest as unusual energy and overconfidence, playing out in bouts of overspending or promiscuity, among other behaviors.| Psychology Today
The ability to pay attention to important things—and ignore the rest—has been a crucial survival skill throughout human history. Attention can help us focus our awareness on a particular aspect of our environment, important decisions, or the thoughts in our head. Maintaining focus is a perennial challenge for individuals of all ages, and people have long sought out strategies, tricks, and medications to help them stay on track.| Psychology Today