Based on the location of the lesion, the following classification is adopted-
Peptic : Peptic ulcers are manifested as painful lesions in the stomach or duodenum and are mediated by the Helicobacter pylor
Gastric: Peptic ulcers found in the stomach are called gastric ulcers. Their symptoms are more or less similar to peptic ulcers.
Esophageal: These ulcers are found in the lowermost portion of the esophagus and in most cases are caused by acid reflux.
Duodenal: Peptic ulcers formed in the duodenum are called duodenal ulcers. They are normally found in the uppermost portion of the small intestine(inner linings).
Esophageal: These ulcers are found in the lowermost portion of the esophagus and in most cases are caused by acid reflux.
Depending on the nature of the lesions they can be classified into three types-
- Bleeding type: This is caused due to internal bleeding from an existing peptic ulcer.
- Refractory type: These are caused by extreme cases of bacterial infection and are often incurable after treatment.
- Stress type: These are manifested as clustered lesions in esophagus, stomach or duodenum, and are caused by excessive emotional stress.
Two other forms of ulcers have also been identified. These are-
- Diabetic foot type: It is characterized by deep sores on the feet and is normally found in Type 2 Diabetes patients.
- Venous type: It is also called stasis type and is characterized by sores in the lower extremities.