The anxiety and fear may be caused by the following reasons: 1, there may be character defects, some people have an introverted personality and low self-esteem, some people are perfectionists, especially strong; at the same time, there are also some people are particularly sensitive, always care about the actions of others, care about the evaluation of others; there are also some people have a timid personality, love to do things, think things are particularly radical, etc., there are such character factors are easy to become anxious, worried, afraid. 2, may be caused by some psychological diseases, such as anxiety, anxiety disorders, anxiety patients are easy to tension, anxiety, worry, worry every day, and will be accompanied by physical symptoms, such as headache, dizziness, nausea, vomiting, abdominal discomfort, panic, frequent urination, urinary urgency, sweating, etc., if the above causes must be actively treated symptomatically.