Diseases that affect the stomach lining include gastritis, stomach ulcers, stomach polyps and stomach cancer, according to WebMD, Mayo Clinic and Healthline. The stomach lining produces enzymes and the acid responsible for digestion, notes Healthline.
Gastritis is an inflammation of the stomach lining. This condition occurs due to excessive alcohol use, stress, viral or bacterial infections, use of medications such as ibuprofen and aspirin, and bile reflux, a condition in which bile flows into the stomach. Symptoms of gastritis include indigestion, bloating, abdominal pain, loss of appetite and a burning feeling in the stomach, explains WebMD.
Stomach ulcers are sores in the small intestine or stomach lining. They occur when the acid in the digestive track eats away the layer of mucus that protects the stomach from digestive juices. Smoking, overproduction of calcium, frequent use of steroids and a family history of stomach ulcers are the primary risk factors for this condition, notes Healthline.
Stomach polyps involve the formation of masses of cells on the inside of the stomach lining. They are not likely to become cancerous and usually cause no symptoms. Stomach cancer occurs when certain cells in the stomach grow and divide more rapidly than normal cells. It is not clear what causes this condition. Typical symptoms include weight loss, severe heartburn, indigestion, stomach pain and feeling full after eating small amounts of food, reports Mayo Clinic.