--->Attention deficit hyperactivity disorder
Other /More definition:
ADHD is the acronym of Attention Deficit Hyperactivity Disorder refers to a behavioral disorder which is often arising in early childhood characterized by inattention, hyperactivity, and impulsiveness; features such as a greater than normal amount of activity, restlessness, difficulty concentrating or sustaining attention, and impulsivity It is an inability to sustain attention, believed to be caused by deficits in behavioral inhibition. People with ADHD display hyperactivity, impulsiveness, show great difficulty sustaining attention, and are at high risk for academic difficulties.