Gastritis

Etiology

Erosive gastritis: NSAIDs, alcohol, stress, caustic ingestion, radiation
Portal gastropathy
Helicobacter pylori gastritis
Pernicious anemia gastritis
Uncommon infections: necrotizing gastritis; cytomegalovirus or Candida (common in immunosuppressed); Anisakis marina (raw fish)
Chronic granulomatous inflammation: tuberculosis, syphilis, fungal infection, sarcoidosis, Crohn’s disease
Eosinophilic gastritis
Lymphocytic gastritis

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