Gastric upset is a term used to describe a variety of symptoms in the digestive system, including bloating, cramps, nausea, and diarrhea. The discomfort may be caused by a number of factors, such as stress, food allergies, medication side-effects, or gastrointestinal infections. There are a number of synonyms for gastric upset that may be used interchangeably, depending on the specific symptoms or underlying cause. These include: indigestion, stomachache, dyspepsia, digestive discomfort, abdominal pain, upset stomach, or gastrointestinal distress. Treatment for these symptoms may vary, depending on the underlying cause, but commonly includes dietary modifications, medication, and stress-management techniques.