what causes upset stomach
Post 1. Many things can cause upset stomach symptoms. Sometimes an upset stomach causes are a result of stress and anxiety. Here the physical pain that is felt in the abdominal area is due to stress. It may also cause vomiting in severe cases, but usually when a person has an upset stomach and it has a different cause. It could be the stomach flu or food poisoning that caused the vomiting. When this happens special care is necessary in order to heal.