Nowadays, people’s living standards are improving and many children have ADHD, which not only causes children to lose focus but also affects their normal development. There are many causes of ADHD, listed below: Genetic factors: According to surveys, ADHD has a certain heredity, if the child’s parents and other immediate family members have had ADHD, it is necessary to strengthen the prevention of ADHD in children. Brain neurotransmitter abnormalities: Brain nerves directly affect our behavior, and if brain neurotransmitters show symptoms of disorder, the child will develop ADHD. Damage to brain tissue: The brain controls human behavior, and children who grow and develop with brain tissue damage caused by high fever or other illnesses may also have ADHD. Psychological problems: Children are curious about the world, so if parents do not communicate with them in a timely manner, ADHD may occur. Severe cases can also develop into mania, so parents should not only pay attention to the child’s physical health, but also to the child’s mental health when they bring up their children. If you find that your child has ADHD, you need to correct and enlighten your child in a timely manner, and if it is caused by pathological factors, you need to seek medical attention in a timely manner.