What causes ADHD?
There are several factors that may contribute to the condition, which includes:
Heredity: The fact that ADHD tends to run in families suggests that children may inherit a tendency to develop ADHD from their parents.
Chemical imbalance: An imbalance of brain chemicals (neurotransmitters) that transmit nerve impulses may be a factor in the development of ADHD symptoms.
Brain changes: Areas of the brain that control attention are less active in children with ADHD than in children without ADHD.