India, June 28 -- Peptic ulcers are open sores on the lining of the stomach that can lead to a burning sensation, especially at night or when we are hungry. But what are ulcers? In an interview with HT Lifestyle, Dr. Sanjay Khanna, co-chairman - Manipal Institute of Gastroenterology, hepato-biliary and pancreatic sciences, Manipal Hospitals Dwarka said, "Ulcers occur when the protective layer of mucus is reduced, allowing stomach acid to damage the tissue." Also read | Ulcer: Doctors reveal causes, symptoms you should never ignore, treatment

Addressing this, Dr Sanjay Khanna said, "Ulcer pain comes from the sore area being exposed to stomach acid." This can happen due to multiple reasons:

Helicobacter pylori (H. pylori) infection: This ...