Peptic ulcer disease, also known as PUD, is a common gastrointestinal disorder that affects millions of people worldwide. This condition is characterized by the development of painful sores or ulcers in the lining of the stomach, small intestine, or esophagus. There are various synonyms for this condition, including gastric ulcers, duodenal ulcers, peptic ulcers, and stomach ulcers. Other terms that are often used to describe PUD include acid ulcer, peptic disease, and gastroduodenal ulcer. Regardless of the term used, it is essential to seek proper medical diagnosis and treatment if symptoms of PUD persist. Early intervention can help manage symptoms, prevent complications, and improve overall quality of life.