Many other conditions may cause symptoms similar to those of a peptic ulcer. These conditions may include:

• Nonulcer dyspepsia.
• Gallstones .
• Gastroesophageal reflux disease (GERD) .
• Irritable bowel syndrome (IBS) .
• Crohn's disease .
• Inflammation of the pancreas (pancreatitis).
• Infection with certain parasites, such as giardiasis.
• Infection with certain viruses, such as cytomegalovirus (CMV).
• Stomach cancer.
• Lymphoma .
• Psychiatric disorders.
• Other digestive diseases and conditions that cause impaired digestion and malabsorption, such as celiac disease.