Thursday, 29 March 2012


Hyperactivity disorders are also known as Attention Deficit Hyperactivity Disorder (ADHD) is one of the most common childhood disorders. It is a disorder of certain mechanisms of the central nervous system, which can continue through adolescence and adulthood; ADHD has three subtypes which are grouped predominantly inattentive, combined hyperactive-impulsive and inattentive. This disorder is known to interfere with the child’s home, school and social life, thus, the child is unable to screen out stimuli, the child is easily distracted and this usually intelligent child receives a label of being learning disabled and finds the nervous system cannot be showed down to focus long enough to complete an assigned task.

Inattention, hyperactivity and impulsivity are the key behaviours of ADHD. Though, it is the normal for all children to be inattentive, hyperactive or impulsive sometimes but for children with ADHD, this behaviour are more severe and occur more often. To be diagnosed with the disorder, a child must be diagnose with the disorder, a child must have the symptoms for six months or more months and to a degree that is greater than other children. Children who have symptom of inattention may be easily distracted, in details, forget things and switch from one activity to another, having difficulty focusing attention or organizing and completing a task or learning something new.
On the other hand, children who symptoms of hyperactivity may fidget and squirm in their seats, talk nonstop, dash around, touching or playing with anything and everything in sight and also have trouble doing quiet task and constantly in motion while children who have symptoms of impulsivity may be very impatient, blurt out inappropriate comments, show emotions without restraint and act without regard for consequences. 
Though scientist are quiet unsure of the causes for this disorder, many students suggest that genes play a large role in the generation of this disorder (Faraone et al:2006).
In addition to genetics, researches lays credence to a possible to a possible cause from environmental factors, brain injuries, nutrition and the social environment (Linnet et al:2003, Brann et al:2006).

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