Now with medical advances and our better understanding, it is now recognized that children are experiencing this condition because of a psychological behavioral problem – ADHD. What is this problem all about? ADHD is the common name for attention deficit and hyperactivity disorder, and refers to a group of syndromes that occur in childhood and are characterized by marked difficulty in paying attention, short attention span, and excessive or impulsive activity compared to children of the same age. What exactly are the manifestations of ADHD? 1. Attention deficit: Children with this disorder have short attention spans and are easily distracted; they often fail to filter out irrelevant stimuli and respond to a variety of stimuli. Therefore, the affected children in listening, doing homework or doing other things, attention is often difficult to maintain lasting, good froze and distracted; often distracted by the movement in the surrounding environment, and look around or pick up the conversation; often difficult to do things lasting, often one thing is not done, and go to do another thing; difficult to always comply with instructions and complete the task required to complete; do things often do not pay attention to detail, often due to carelessness and mistakes Often avoids or is reluctant to engage in tasks that require long periods of concentration, such as writing assignments, and is unable to complete these tasks on time. Often lose things, lose their belongings or forget things; talk to him/her, also often absent-minded, seem to listen to non-listen, etc. 2. Overactivity: Overactivity means that the child’s activity level exceeds the level appropriate to his/her development compared to most children of the same age and gender. Most hyperactivity begins in early childhood, but some children begin in infancy. In infancy, children are extra active, crawling out of their cribs or carts, and when they start to walk, they often run instead of walk; after early childhood, children are active, unable to sit still, climbing high and low, rummaging through boxes, and have difficulty doing things quietly and playing quietly. After going to school, the child’s performance is more prominent due to discipline and other restrictions. The child has trouble sitting in class, twisting around in his seat, making small movements, often playing with pencils, erasers and even school bag straps, talking with classmates and even getting out of his seat; after class, the child provokes classmates, talks a lot, runs around and makes a lot of noise, and has difficulty playing quietly. After entering adolescence, the child’s small movements decrease, but may subjectively feel fidgety. 3.Impulsive: Children with this disorder are more impulsive and do not consider the consequences. Therefore, the child will often interrupt or interrupt other people’s conversation; will often interrupt or interfere with other people’s activities; teachers ask questions before the end, will often answer without permission; will often climb high and low without considering the danger; will recklessly cause injury to others or themselves. The child is often emotionally unstable, easily overexcited, and easily impatient, tantrums or crying over trivial matters, or even defiant and aggressive behavior. 4, cognitive impairment and learning difficulties: Some children with this disorder have spatial perception disorder, audio-visual conversion disorder, etc.. Although the child’s intelligence is normal or close to normal, but due to attention deficit, hyperactivity and cognitive impairment, the child often has learning difficulties, academic performance is often significantly behind the level of intelligence should be. The case of Xiao Qiang also illustrates this characteristic.