def
inflammation of the inner lining of the colon by an infectious agent
aetiology
most commonly from food poisoning 1 viruses + bacteria -campylobacter -shigella -e. coli -salmonella 2 parasites -giardia 3 pseudomembranous colitis -c. difficile
what sort of diarrhoea could be present in infectious colitis caused by viruses or bacteria
diarrhoea or bloody diarrhoea
what would not normally caused bloody diarrhoea
pseudomembranous colitis by c. diff
history
1 diarrhoea >3 a day
2 stool may contain blood or mucus
3 abdominal pain
4 fever
examination
1 fever
2 tenderness
3 guarding
epi
common in hospitalised patients on antibiotics (c. diff)
investigations
1 bloods
-FBC (high WCC)
-faecal calprotectin
2 stool culture + sensitivity