you can say it's one of the most frequent & most common neurodevelopmental disorders of childhood. Usually, It is diagnosed first in childhood & lasts into adulthood. During the early school years, boys are more likely to have it than girls. It’s usually spotted when the child begins to have difficulties in paying attention. Symptoms of ADHD (Attention-deficit/hyperactivity disorder) include inattention (means not being able to have focus), hyperactivity (state of excess movement that is not fitting according to the situation), and impulsivity (hasty acts that occur at the moment without thought).