what is gastritis
inflammation causing mucosal injury of stomach
what causes acute gastritis
chemical irritation
trauma
burns
infection
what causes autoimmune gastritis (affects fundus and body)
antibodies destroy parietal cells and intrinsic factor, leading to gastric atrophy
what is consequence of autoimmune gastritis
pernicious anaemia and metaplasia
what causes chronic gastritis
chemicals (NSAIDs, alcohol, bile reflux) or bacterial infection (H. pylori)
what is consequence of chronic gastritis
gastric ulcers