What are the causes of chronic diarrhoea

Diarrhoea of > 3 weeks duration is called as chronic diarrhea.

Causes

1.Infection

2.Inflammatory bowel disease

3.Drugs

4.Malabsorption

5.Endocrine

• Zollinger-Ellison syndrome
• Hyperthyroidism
• Carcinoid

6.Non-beta cell pancreatic tumour

7.Villous adenoma

8.Motility disorder

9.Irritable bowel syndrome

10.Post-vagotomy syndrome.