The most common symptom of a stomach ulcer is a burning or gnawing pain that develops in your abdomen . The pain can also travel up to your neck, down to your navel (belly-button) or through to your back. The pain associated with a stomach ulcer is caused by the ulcer itself and stomach acid that comes into contact with the ulcer and irritates it. The pain can last from a few minutes to a few hours.
Stomach ulcers are painful sores that can be found in the stomach lining or small intestine. Stomach ulcers are the most visible sign of peptic ulcer disease. They occur when the thick layer of mucus that protects your stomach from digestive juices is reduced, thus enabling the digestive acids to eat away at the lining tissues of the stomach.