Stomachache, nausea. What's going on?

Stomachache vomiting what happened: The causes of stomachache and vomiting may include: first, indigestion, some patients with poor constitution, will appear for lack of motivation, often because of eating some irritating food, or difficult to digest food, resulting in abdominal distension, in addition to intestinal flora imbalance, lung gas is easy to accumulate in the intestinal tract, but also can cause abdominal distension. Second, organic diseases, such as gastrointestinal tumors, chronic gastritis, gastric ulcers, gastroptosis, gastric dilatation and pyloric obstruction, etc., will cause gastrointestinal gas accumulation, manifested as abdominal distension and abdominal gas retention, when gastrointestinal gas accumulation is excessive, patients will feel abdominal discomfort, manifested as belching, abdominal distension. Third, functional diseases, such as dyspepsia, intestinal stress syndrome constipation, neurosis, etc. Four, gastrointestinal diseases, such as chronic gastritis, gastric ulcer, enteritis, intestinal obstruction, habitual constipation, etc. Five, gastrointestinal dysfunction, due to some reasons caused by gastrointestinal motility function weakened or disappeared, resulting in gastrointestinal gas excretion absorption, obstacles.