Answer:Attention-deficit hyperactivity disorder
Explanation:ADHD(ATTENTION-DEFICIT HYPERACTIVITY DOSORDER) is a medical condition that has been attributed to different causes which includes GENETIC,LOW BIRTH WEIGHT,BRAIN INJURIES, ENVIRONMENTAL TOXINS ETC.
Attention-deficit hyperactivity disorder makes it very difficult for the person affected to control his or her response to impulses and pay attention,such a person is restless.