Answer:: Attention deficit hyperactivity disorder
Explanation:
ADHD is a form of mental disorder in children where they are filled with activity. It often does not have cure but it can be managed with the child if it is detected early during the child growth. ADHD can be genetic and can be inherited from parents, it can also be caused by a brain problem resulting from damage to the part of the brain that controls activity.
ADHD results in loss of concentration, lack of attention during class activity.
