First, a clarification should be made about this topic. In pediatric internal medicine, 14 years of age is the cutoff, and over 14 years of age is the age for general internal medicine services, because after 14 years of age the patient’s medication dosage is the same as that of an adult. In psychiatry, the cut-off age for child psychiatry is 18 years, and 18 years is the legal age of adulthood in many countries. The adolescent we are discussing here would be Teenage in English, which directly translates to a teenager. Strictly speaking, Teenage’s psychiatric-psychological problems basically do not include 11-year-olds, and not many 12-year-olds, most of which are adolescent problems, although, of course, the upper limit of Teenage can be more than 19 years old. Therefore, the Teenage discussed here, the age definition is not according to the medical definition. The age of adolescence is the most important time of life in terms of development and development, and it is also the stage where psychiatric and psychological problems are most likely to occur. In fact, in psychiatry, psychiatric and psychological mean the same thing. Psychiatry has a clear definition of psychiatric disorders, and there are many psychiatric disorders that are prone to occur during adolescence. In addition to psychiatric disorders, there are many non-medical disorders of psychological problems during adolescence, which can also seriously affect the development of adolescents. For one reason, this article is devoted to psychological problems as a separate issue from mental illness. Psychiatric problems in adolescents: Many psychiatric disorders have a high prevalence in adolescence, such as schizophrenia, the most common age group for the onset of this common disorder is 16 to 30 years old: there is also social phobia, which basically develops in the teenage years. In addition, obsessive-compulsive disorder, depression, and anxiety disorders are also prone to develop during this adolescent period. Psychiatric depersonalization disorders, which are rare in psychiatry, also have their onset overwhelmingly at this age. These psychiatric disorders will not be described in detail here. Some special psychological problems of adolescence: 1. Internet addiction: There is some controversy about whether this condition is a mental illness. My personal opinion is that Internet addiction is a mental illness. However, it is not appropriate to treat this disease in a psychiatric hospital. Internet addiction is the number one reason why college students drop out of school. Those parents of internet addicts must agree with the idea that internet addiction is a mental illness, otherwise, they can’t find help. The treatment of internet addiction will not be discussed in detail here. 2. Refusal to go to school: Adolescence is a critical period of learning in life, and refusal to go to school is a relatively common phenomenon. There are various reasons for refusing to go to school, but the result is the same: interruption of school and disengagement from society. Going to school is the student’s job, and once school stops, the person often experiences anxiety and depression. There is no time to delay in ending the state of non-attendance because, once the state of non-attendance continues, it will be difficult to resume school in the future. 3. Family relationship problems: Some adolescents can have many problems at home, such as ongoing confrontations or even conflicts with parents, and many behavioral problems at home, while being basically normal at school and outside the home. These problems can also be mixed with mental illness problems, making treatment extra complicated. 4. Character problems: Adolescent character disorders are seen in psychiatric diagnostic criteria, but are not a problem familiar to psychiatrists. Adolescents are inherently psychologically variable, and carefully identifying the problems they have can be a very difficult problem.