Acute erosive gastritis; Acute erosive gastropathy; Acute hemorrhagic gastritis; Stress gastritis
Acute gastritis is a broad term referring to many disorders that may induce acute inflammatory changes in the gastric mucosa. Distinguished are acute hemorrhagic gastritis and acute infectious gastritis. In this entry the emphasis is especially on acute hemorrhagic gastritis, clinically characterized by a sudden onset of symptoms and rapid resolution after the underlying etiological mechanisms or agents (either chemical or physical) have been corrected. The different etiologies share the same general clinical presentation; however, they differ in their own unique histologic pattern with or without hemorrhage and erosive changes.
Acute gastritis is mostly associated with the intake of large doses of aspirin or other nonsteroidal anti-inflammatory drugs (NSAIDs), excess alcohol, or ischemic injury following major trauma. In many cases the etiology remains unknown....