Here is the difference between a normal stomach, gastritis, and a stomach ulcer. Gastritis involves a mostly superficial inflammation, affecting just the top layers of the stomach lining. It’s like a surface-level irritation across the stomach’s inside surface. In contrast, a stomach ulcer is more like a deep cut through the surface, reaching deeper layers of the stomach wall. This “wound” makes it more severe as it’s not just the top layer that’s inflamed but also the tissues beneath it, which