Why is it always nausea?

Nausea and vomiting, patients also show vomiting acid water, even bile acid liquid, abdominal pain, abdominal distension and other manifestations. Should be alert to digestive tract diseases, such as chronic gastritis with erosion, peptic ulcer, some combined with weight loss, black stool and other manifestations, should be highly alert to gastric cancer and other possibilities. At the same time, some patients with nausea and vomiting, especially young women, we should be alert to early pregnancy and other causes. So for patients with nausea and vomiting, we should improve gastroscopy and other examinations as soon as possible. Gastroscopy examination did not show obvious abnormalities in patients, need to conduct abdominal B ultrasound examination to rule out biliary tract and pancreatic diseases.