Clinical manifestations Schizophrenia is one of the most common psychiatric disorders, and its clinical manifestations are mainly abnormalities in cognition, emotion and volitional behavior. Specifically, if the following symptoms occur, schizophrenia is highly suspected. 1. General performance. The enthusiasm and ability to work decreases, students’ academic performance decreases, they are cold to others, distant from others, not interested in the outside world, do not know how to care for their families, live a lazy life, are sensitive and suspicious, their personality changes, etc. Some patients may have insomnia, headache, dizziness, weakness, emotional instability and other discomfort and neurotic symptoms. 2. The thought association process lacks coherence and logic, and the speech is difficult for others to understand. The patient’s entire conversation or writing content lacks logic, the narrative is not very relevant, and cannot clearly express the meaning around the central idea of the conversation, and it is very difficult to talk with him/her, making people feel confused. 3. Delusions. This is one of the most common symptoms of schizophrenia, and various delusions can occur. Patients may feel that their personal safety or that of their family members is threatened, and they may think that someone is trying to frame them, stalk them or spy on them without any basis. Patients feel that what is happening around them is related to them and directed at them, and think that people around them are talking about them and talking about them. The patient feels that his thinking, emotions, and behavior are controlled by outsiders or some outside force, and is very afraid. The patient believes that others already know what he or she thinks and does, and that he or she is like a transparent person without any privacy. Believing that your parents are not your biological parents and that you are a famous family member. Convinced that someone of the opposite sex has fallen in love with you and has been rejected by the other person many times, but believes that this is the other person testing you. Convinced that one’s lover is unfaithful to one’s self, stalking and spying on one’s lover’s every move. Baselessly exaggerate their ability, status, wealth, such as claiming that they do not leave home, every day there are millions of dollars into the account, a painting of their own can be sold to tens of millions of dollars, etc.. 4. Hearing people’s words. This refers to a common symptom of schizophrenia in which the patient perceives the presence of something when it does not exist in objective reality. The most common hallucination is hallucination, where no one is talking around, but the patient hears a voice speaking. Patients may talk to themselves, cuss with the “other person”, or even do dangerous actions, such as committing suicide or murder, as requested by the voice. 5. Abnormal emotion. Patients lack emotional reactions to things around them, such as the lack of detailed emotions in the early stage, such as concern for relatives, and indifference to important matters involving their own interests in severe cases, and no corresponding emotional reactions to things that are generally troublesome and painful to people. May also show emotions and the surrounding environment is not coordinated, no reason for self-smiling, it is difficult to communicate with the patient emotionally. 6. Abnormal will behavior. The patient may be withdrawn, passive, lack of initiative and enthusiasm, do nothing all day long, live a lazy life, have no senior intention (will to be reduced), have no interest in work, study and interaction, and have significantly reduced ability and impaired social function. Stupidity, childishness, and bizarre behavior may also occur.