1, symptoms reflected by physical and mental discomfort, such as fatigue, weakness, mood changes, etc. It is difficult to be clear for a long time;
2. All kinds of weak manifestations caused by the decline of organizational structure or physiological function that is not suitable for age;
3. Microecological imbalance;
4. Premorbid physiological and pathological changes of some diseases.
Clinical manifestations are varied, such as fatigue, muscle joint pain, dizziness and headache, palpitation and chest tightness, sleep disorder, loss of appetite, epigastric discomfort, fear of cold and heat, easy to catch a cold, dry eyes and so on.
Psychologically, it can be manifested as depression, distraction, impatience, irritability, fear and timidity, memory loss, inattention, listlessness and unresponsiveness. Social communication can be manifested in the following aspects: unable to assume the corresponding social role, difficult to work and study, unable to correctly handle interpersonal and family relationships, and difficult to conduct normal social communication.