5. Vomiting
Similarly to the pain caused by acid reflux, vomiting can cause abdominal pain as stomach acids are sent the wrong way along the digestive tract. As a person vomits, tissues are irritated along the way, worsening the pain considerably.
The actual physical process of vomiting can also cause the muscles in the abdomen to contract and tighten, making them sore. This too, adds to the pain that a person can expect to experience as a result of vomiting. Intestinal blockages or over-consumption of alcohol could be reasons as to why a person would vomit, but food poisoning, bouts of illness or overexertion are other less obvious reasons why someone might vomit.
If the stomach pain caused by vomiting is something that you want to avoid entirely, you have to keep one step ahead of the possible causes of vomiting. The act of vomiting can be particularly troubling for some people as they almost develop a phobia of some kind.