Attention Deficit Disorder is characterized by impaired concentration, hyperactivity or underactivity, procrastination, disorganization, and boredom. Many individuals with ADD have school difficulties related to dyslexia or learning disabilities, and they have impairments in balance and coordination. Mentally, individuals are also resistant to listening to social demands (do, don't, should, shouldn't), but have an increased level of independence. Many have emotional difficulties that affect their mood, reactivity to pain, and cause them to overreact to excitement. People with ADD may constantly feel irritated, frustrated, and angry, always feeling unsatisfied. Although experts had known ADD was present in patients with Dyslexia or Learning Disabilities, it was recently discovered that Dyslexia, LD, and ADD were all connected from the same inner-ear dysfunction. ADD symptoms appear in roughly 90% of dyslexic individuals who are diagnosed by signs of inner-ear dysfunction. Both ADD and Dyslexia react positively to medication and therapy that seek to improve inner-ear functioning. Therefore, dyslexia and ADD are extremely similar because both are characterized by a common inner-ear impairment.