Defining diarrhoea
Customers with diarrhoea may describe having a tummy bug, food poisoning or traveller's diarrhoea. Lifestyle pressures, infection or medical conditions can all be triggers of diarrhoea,3 which can be a real inconvenience for your customers, interfering with their daily activities, or leading to dehydration.
Diarrhoea can be defined as acute, persistent or chronic. Customers with persistent/chronic diarrhoea should be referred to their GP.
- ACUTE
- Lasts less than 14 days1
- Usually comes on suddenly and clears within a few days3
- PERSISTENT
- Lasts longer than 14 days, but less than 4 weeks1
- CHRONIC
- Lasts more than 4 weeks1
- Continuous/prolonged diarrhoea
Causes of acute diarrhoea include:1,3
- 
  Viral infection, e.g. norovirus. This is the most common infectious cause 
- 
  Bacterial infection, e.g. Salmonella or E.coli food poisoning 
- 
  Parasitic infection e.g. from the protozoa Giardia or Cryptosporidium. Giardiasis, for example, can be transmitted though untreated drinking water or through contaminated surfaces 
- 
  Medications such as magnesium-containing antacids, allopurinol, metformin, NSAIDs, proton pump inhibitors; Clostridium difficile can cause diarrhoea in those who have taken antibiotics 
- 
  Anxiety, which can cause the bowel contents to move too rapidly through the gut 
- 
  Food intolerance (particularly lactose intolerance) or foods containing artificial sweeteners such as sorbitol 
- 
  Other medical conditions such as irritable bowel syndrome (IBS), coeliac disease or an overactive thyroid 
- 
  Local food hygiene and sanitation when travelling 
 
            