Causes of Attention-deficit hyperactivity disorder (ADHD)
Children affected with Attention-deficit hyperactivity disorder (ADHD) show very low performance at school.
Neuroimaging studies suggest that the brains of children with Attention-deficit hyperactivity disorder (ADHD) are different from those of other children. In these children, neurotransmitters (including dopamine, serotonin and adrenalin) function differently when compared to normal children.1 These neurotransmitters play a major role in controlling emotions and reactions.
Researchers believe that a majority of Attention-deficit hyperactivity disorder (ADHD) arises from the combination of various genes, many of such genes affect dopamine (hormone and a neurotransmitter) transporters. This results in confusing behavioral problems, depression, sleep deprivation and learning disabilities.2
Researches on genomes have identified regions on the chromosomes and have predicted to contain genes that contribute to the Attention-deficit hyperactivity disorder (ADHD) condition, but the gene, which is responsible for Attention-deficit hyperactivity disorder (ADHD) is not yet identified.3
Next page: Risk factors for attention deficit hyperactivity disorder
Written by: Healthplus24 team
Date last updated: April 19, 2012