What is diarrhoea? Diarrhoea is a symptom of various illnesses and bowel disturbances during which someone passes more frequent, loose, watery stools.

Almost everyone has diarrhoea at some point in his or her life. In developing countries, where illnesses that cause diarrhoea are more common and where health care is less readily available, diarrhoea is a major health concern because of its potential to cause severe, life-threatening dehydration. Infants and the elderly are more prone to dehydration from diarrhoea.
Diarrhoea that comes on suddenly and lasts for no longer than a couple of days is usually referred to as "acute diarrhoea". Most people with acute diarrhoea recover on their own. Diarrhoea that lasts more than two weeks is thought of as "chronic diarrhoea". Typically, chronic diarrhoea requires medical care to find the underlying cause and treat complications, such as dehydration.
You are most likely to come down with diarrhoea after coming into contact with these infectious organisms and agents:
Many people who travel to foreign countries develop what is termed "traveller's diarrhoea," usually after drinking contaminated water. Infectious diarrhoea is a particular hazard in developing countries where it may be difficult to keep waste water and sewage separate from water used for cooking, drinking, and bathing and where inadequate facilities make it difficult to practise good personal hygiene

Almost everyone has diarrhoea at some point in his or her life. In developing countries, where illnesses that cause diarrhoea are more common and where health care is less readily available, diarrhoea is a major health concern because of its potential to cause severe, life-threatening dehydration. Infants and the elderly are more prone to dehydration from diarrhoea.
Diarrhoea that comes on suddenly and lasts for no longer than a couple of days is usually referred to as "acute diarrhoea". Most people with acute diarrhoea recover on their own. Diarrhoea that lasts more than two weeks is thought of as "chronic diarrhoea". Typically, chronic diarrhoea requires medical care to find the underlying cause and treat complications, such as dehydration.
What causes diarrhoea?
Many different problems can cause diarrhoea. Here are the major causes:You are most likely to come down with diarrhoea after coming into contact with these infectious organisms and agents:
- A virus, such as rotavirus, winter vomiting disease (Norwalk virus or norovirus), enterovirus, or a hepatitis virus.
- A bacterium, such as E. coli, salmonella, shigella, C.diff (clostridium), or cholera (Vibrio cholerae).
- A parasite, such as those that cause giardiasis and amoebiasis.
Many people who travel to foreign countries develop what is termed "traveller's diarrhoea," usually after drinking contaminated water. Infectious diarrhoea is a particular hazard in developing countries where it may be difficult to keep waste water and sewage separate from water used for cooking, drinking, and bathing and where inadequate facilities make it difficult to practise good personal hygiene
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