The term “gastro-” means stomach. When a word ends with “itis,” it means “inflammation of.” So the word gastritis means inflammation of the stomach. When we look into a patient’s stomach that has gastritis, we see that it is very reddened and sometimes so inflamed that it can ooze a small amount of blood just by being touched. Gastritis is very common with the ingestion of substances which irritate the lining of the stomach. Examples of these are alcohol, medications containing aspirin and anti-arthritic medications. Some people have gastritis for unclear reasons.