Nausea, nausea. What's the cause?

If there are nausea, vomiting, nausea symptoms, usually considered related to digestive tract diseases, such as gastritis, gastric ulcer, etc. If it is a woman of childbearing age, nausea, vomiting symptoms, but also consider pregnancy caused. Because after pregnancy, human chorionic gonadotropin hormone will increase, gastric acid secretion will decrease and gastric emptying delay, so the above discomfort symptoms will occur. In addition, if there are other systemic diseases, such as cardiovascular disease, hypertension, etc., nausea, vomiting and nausea may occur during severe attacks.