Helicobacter pylori infection is considered the primary cause of peptic ulcers, often leading to excess stomach acid, abnormal gastric motility, and other symptoms. Excess stomach acid can cause acid reflux, heartburn, and a burning sensation, while abnormal gastric motility may lead to nausea, belching, and even vomiting and bloating, with stomach acid irritation likely causing upper abdominal pain. Gastric ulcer pain is generally located in the upper left abdomen or below the sternum, typically presenting as postprandial pain. Duodenal bulb ulcers generally cause pain to the upper right of the navel, typically fasting pain that eases upon eating, sometimes accompanied by menstrual-like pain, with pain from ulcers behind the bulb potentially radiating to the back.