Stomach pain often dry heaving, mainly due to the following conditions: 1, acute gastritis will be accompanied by vomiting, as well as fluid balance disorders and other symptoms, as well as severe headache, as well as eye pain, eye obvious congestion, redness and other manifestations. After ingesting food will be accompanied by obvious abdominal pain, diarrhea, nausea, vomiting and other symptoms. 2, may also be caused by acute gastric dilatation, the vomit will have a clear sour taste, mainly due to the pyloric obstruction. If you vomit after ingesting food, in most cases there is no sour taste, it may be due to esophageal obstruction, if the vomit appears obvious yellowish-green bile, this is usually due to duodenal obstruction.3, it may also be due to intestinal obstruction, intestinal obstruction basically vomit after eating, but the amount of vomit is not a lot.4, stomach pain, dry vomiting may also be a manifestation of neurosis The following are some of the reasons for this.