What is the cause of ADHD in children?

summary

This kind of children's intelligence is normal or basically normal, but there are defects in learning, behavior and emotion, which are mainly manifested as inattention, short attention, excessive activities, emotional impulsivity, poor academic performance, difficult to get along with people at home and school, and parents and teachers often feel helpless in daily life. What is the cause of ADHD in children? Next, I'd like to share my views with you.

What is the cause of ADHD in children?

The heritability of the disorder is 0.75-0.91, and the mode of inheritance is not clear, which may be polygenic. Molecular genetic studies have shown that the disorder is related to the polymorphism of dopamine receptor gene.

Neurophysiological factors: the abnormal rate of EEG in children with this disorder is high, the main normal is slow wave activity. Increasing EEG power spectrum analysis showed that slow wave power increased, α The wave power and average frequency decrease. It is suggested that there is delayed maturation of the central nervous system or insufficient awakening of the cerebral cortex in children with this disorder.

Mild brain injury caused by various diagnostic concordant causes during pregnancy, perinatal period and postnatal period may be the main cause of this disorder in some children. However, no single brain injury exists in all children with this disorder, nor do relatives see a doctor. All children with this injury have this disorder after injection, and many children with traffic accidents in the center have no evidence of satisfactory brain injury.

matters needing attention

To train children's sensory integration ability. Studies have shown that about half of the children can see the soft sign of nervous system, and some children can have visual movement disorder, spatial position perception disorder, etc. Therefore, parents at home should also pay attention to training children's ability of empathy.