Probability diagnosis
- Acute:
- Gastroenteritis/infective enteritis
- Dietary indiscretion
- Antibiotic reaction
- Chronic
- Irritable bowel syndrome
- Drug reaction
- Chronic infections
Serious disorders not to be missed
- Neoplasia
- Colorectal cancer
- Ovarian cancer
- Peritoneal cancer
- HIV infection (AIDS)
- Infections
- Cholera
- Typhoid.paratyphoid
- Amoebiasis
- Malaria
- Enterohaemorrhagic E.coli enteritis
- Inflammatory bowel disease
- Crohn/ulcerative colitis
- Pseudomembranous colitis
- Intussusception
- Pelvic appendicitis/pelvic abscess
- Acute ischaemic colitis
Pitfalls
- Coeliac disease
- Faecal impaction with spurious diarrhoea
- Lactase deficiency
- Giardia lamblia infection
- Cryptosporidium infection
- Malabsorption states
- Vitamin C and other oral drugs
- Nematode infections
- Strongyloides
- whipworm
- Radiotherapy
- Diverticulitis
- Post GIT surgery
- Ischaemic colitis
- Rarities
- Addison disease
- Carcinoid tumours
- short bowel syndrome
- amyloidosis
- toxic shock
- Zollinger Ellison syndrome
Red flag pointers for diarrhoea
- unexpected weight loss
- persistent/unresolved
- Fever
- Overseas travel
- Severe abdominal pain
- Family history: bowel cancer, crohn disease
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