Gastritis
Body System: Gastrointestinal System | Area Affected: Esophagus, stomach, intestines, liver, and pancreas
Doctor to Consult: Gastroenterologist
What It Is
Gastritis: Gastritis is the inflammation of the lining of the stomach. It may occur as a short episode or have a long duration. There may be no symptoms, but the most common symptom is upper abdominal pain. Other symptoms include nausea and vomiting, bloating, indigestion, loss of appetite and heartburn. Complications may include stomach bleeding, stomach ulcers, and stomach tumors. Autoimmune atrophic gastritis may lead to issues including pernicious anemia.
Why It Happens
Gastritis arises due to factors affecting the Gastrointestinal System. GI conditions result from infections, inflammatory responses, structural abnormalities, or functional motility disorders of the digestive tract. While individual cases vary, a combination of genetic susceptibility, lifestyle factors, and environmental exposures typically contribute to the development of Gastritis.
Who Gets It / Risk Factors
Who Is at Risk for Gastritis
Affects individuals across all age groups, with certain conditions like IBS more common in younger adults and colorectal issues increasing with age.
A family history of gastrointestinal system conditions may increase susceptibility to Gastritis.
Contributing Factors
Diets high in processed food, chronic NSAID use, alcohol consumption, H. pylori infection, or chronic stress.
Co-existing health conditions such as obesity, diabetes, or autoimmune conditions may compound the risk.
When to Seek Emergency Care
Severe abdominal pain with rigidity, blood in stool or vomit, or signs of intestinal obstruction related to Gastritis.
Sudden or rapidly worsening symptoms that impair basic daily function.
Difficulty breathing, severe pain, loss of consciousness, or high fever with confusion.
Medical Overview
A professional summary of diagnosis, treatment, and prevention.
Abdominal pain, bloating, or changes in bowel habits frequently seen with Gastritis.
Nausea, heartburn, or unintentional weight changes that may accompany Gastritis.
Changes in daily functioning or comfort levels that persist beyond a few days.
Scientific References
This content is based on established clinical guidelines and public health resources from the following authoritative sources.
Medically Reviewed for Accuracy
Medical Advisory Board
•Last reviewed: March 20, 2026Content is aligned with established clinical guidelines from authoritative medical institutions, including MedlinePlus (U.S. National Library of Medicine), the CDC, the NIH, and the NHS. All content is reviewed by our medical advisory board for accuracy and safety.