Types

 bacterial gastritis

• Helicobacter gastritis (ex-Campylobacter gastritis)
• Enterococcus gastritis
• mycobacterial gastritis
  • disseminated tuberculosis
  • Mycobacterium avium-intracellulare (AIDS)

• gastric syphilis (Treponema pallidum-associated gastritis or syphilitic gastritis)

 viral gastritis

• enteroviruses
• cytomegalovirus (CMV gastritis) in children and immunocompromised patients

 fungal gastritis

• Candida sp.cies (gastric candidiasis)
• Histoplasma capsulatum (gastric histoplasmosis)
• Mucoraceae (zygomycosis)
  • Mucormycosis agents (Phycomycetes class)

 parasitic gastritis

• Cryptosporidium
• giardiasis (Giardia intestinalis)
• Strongyloides stercoralis
• Anisakis larvae