Advances in attention deficit hyperactivity disorder

In attention deficit hyperactivity disorder (ADHD) is a multifactorial
and clinically heterogeneous disorder that is the result of the
combination of environmental, genetic and bio-logical factors. Its high
prevalence, added to the high level of maladaptation occurring in the
children affected and the ele-vated comorbidity with other psychiatric
disorders have lead to new scientific interest in this disorder.
Especially in recent years, there has been a considerable increase in
its study using neuroimaging techniques. Structural and functional
imaging studies suggest that the ADHD pathophysiology would be
conditioned by a dysfunction in the fronto-subcortical path-ways, as
well as imbalances in the dopaminergic and noradre-nergic systems.