People who have had high-risk behavior are often worried about contracting sexually transmitted diseases and are very concerned about their physical condition. If the disease is detected early and given treatment, the treatment is often satisfactory. However, many people are not infected with sexually transmitted diseases, but just over-amplify the details that they ignored in the past, or emotional tension caused by plant nerve disorders appear some atypical symptoms, this performance is STD phobia, including AIDS phobia, acromegaly phobia and syphilis phobia, etc. The patient with STD phobia generally has some cultural knowledge and has learned about STDs on the internet or in books, but because he is not a professional doctor and is emotionally stressed, he forcibly matches his symptoms with those of the STDs he has identified, resulting in a series of new symptom clusters and even disbelief in hospital test results, repeated visits to the doctor and physical and mental exhaustion. AIDS phobia is the most common example. Patients often feel low fever, white tongue, loss of vision, muscle throbbing and diarrhea, but often there are no abnormalities in ancillary tests. In fact, all of the above symptoms can be caused by emotional stress and plant nerve disorders, and many phobic patients have their symptoms gradually disappear after several tests to rule out AIDS. The best way to avoid STD phobia is to go to the hospital and get examined by a professional doctor. Combining blood tests can be a good way to rule out STDs, while avoiding internet searches for such diseases, and also learning more about the differential diagnosis of STDs, such as immune diseases and drug allergies can have similar symptoms. If you still can’t get rid of the fear you can find a psychiatrist for psychological counseling. If you are not infected with a sexually transmitted disease after a high-risk behavior is diagnosed by a professional doctor, you should not fall into the fear of sexually transmitted diseases, so as to sound the alarm and consider it as a gift from God to yourself and cherish life more, but it can be a valuable lesson in life.