Microscopic colitis

Microscopic colitis
Micrograph of collagenous colitis, a type of microscopic colitis. H&E stain.
Specialty	Gastroenterology
Symptoms	Persistent diarrhea
Types	Lymphocytic colitis, collagenous colitis
Diagnostic method	Endoscopic biopsy of colonic mucosa
Differential diagnosis	Bile acid diarrhea, celiac disease, lactose malabsorption, Crohn's disease, ulcerative colitis, infectious colitis[1][2]
Medication	Loperamide, Bismuth subsalicylate, Budesonide
Frequency	103 cases per 100,000 persons[2]

Microscopic colitis refers to two related medical conditions which cause diarrhea: collagenous colitis and lymphocytic colitis.^[2][3] Both conditions are characterized by the presence of chronic non-bloody watery diarrhea, normal appearances on colonoscopy and characteristic histopathology findings of inflammatory cells.^[1]