Gross. What happened?

There are many reasons for nausea, mainly the following aspects: first, for women of childbearing age, recent nausea symptoms, usually considered to be pregnant performance. Second, if pregnancy reaction is excluded, this situation is considered to be related to digestive system diseases, such as dyspepsia, gastrointestinal dysfunction, gastritis, gastric ulcer, gastric erosion, pyloric obstruction, etc., accompanied by abdominal pain, abdominal distension and other discomfort symptoms. Third, if the patient has chronic pharyngitis, nausea symptoms will also occur. Fourth, hypertension, cerebrovascular diseases and other symptoms will cause nausea.