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An open sore or circumscribed erosion, an ulcer usually appears on the Skin or mucous membranes. It usually refers to a damaged area of the lining of the stomach caused by bacteria (Helicobacter pylori) in association with stomach acids. The bacteria reduce the ability of the mucous membrane to resist the acid.
Corneal ulcers, which result from Infection, Allergy, or foreign objects in the eye, can cause visual impairment if not treated promptly. Most commonly, ulcers occur in the stomach (gastric ulcer) or at the beginning of the small intestine (duodenal ulcer) and cause abdominal Pain, especially between meals.
Peptic ulcers occur in the mucous membrane of the intestinal tract in areas accessible to the hydrochloric acid secreted by the stomach. The usual treatment of peptic ulcer includes some alteration in diet, although the value of smooth, bland foods commonly prescribed in the past is now in question, and antibiotics to eliminate the bacteria and neutralise the hydrochloric acid. In addition, antacids, gels, and anticholinergic drugs are recommended to relieve symptoms.
1. Hollander D and Tarnawski A. Dietary Essential Fatty Acids and the decline in peptic ulcer disease-a hypothesis. Gut 1986; 27:239-42.