Diarrhea in Adults - Infectious Differential Diagnosis

Last updated: 30 January 2026

Differential Diagnosis

Other conditions that should be ruled out in the diagnosis of diarrhea:

  • Celiac disease
  • Colonic ischemia
  • Crohn disease
  • Cystic fibrosis
  • Food allergy
  • Hyperthyroidism
  • Inflammatory bowel disease
  • Irritable bowel syndrome
  • Lactose intolerance
  • Medication adverse effects
  • Microscopic colitis
  • Ulcerative colitis