Clinical symptoms are the patient’s own subjective feelings and experiences after the disease. Clinical symptoms and signs, symptoms for the patient’s own subjective feelings, such as chest pain, abdominal pain, vomiting, dizziness, cough, nasal discharge, skin itching, etc.; and signs for the diagnostic significance of the doctor to the patient’s examination of the symptoms found, this is generally the patient can not be subjective feelings of the objective existence of, such as vital signs, including body temperature, pulse, respiration, blood pressure, heart rate, and so on. Symptoms and signs are very important to the doctor’s clinical diagnosis, so patients to the hospital to see the doctor, to fully recount their symptoms, there can not be hidden, nor can they make something out of nothing, as long as this is so that the doctor can be diagnosed in a timely manner, and timely treatment.