Adults with ADD and ADHD often have difficulty staying focused and attending to daily, mundane tasks. For example, you may be easily distracted by irrelevant sights and sounds, quickly bounce from one activity to another, or become bored quickly. Symptoms in this category are sometimes overlooked because they are less outwardly disruptive than the ADD/ADHD symptoms of hyperactivity and impulsivity—but they can be every bit as troublesome. Children with ADHD may be hyperactive and unable to control their impulses, or they may have trouble paying attention. These behaviors interfere with school and home life. Another primary issue that can directly cause ADD or ADHD is disruption in cerebrospinal fluid, which is crucial for proper brain function.