In the TV series Other Happiness, the illness of the second child is caused by long-term addiction to games. This disease is called Internet addiction, which is a new psychological problem faced by modern society. Internet addiction disorder is an obsessive-compulsive psychological disorder, which mainly shows excessive dependence on the Internet and its related products, thus affecting individuals' daily life, learning and social skills. The underlying causes of this disease are often related to personal family factors, social environment and psychological state.
The above information is for reference only. For more information, it is recommended to consult relevant information or consult a mental health professional.