What is diarrhoea?
Diarrhoea is the passage of loose, watery stools occurring more
than three times in one day. It is a common problem that usually
lasts a day or two and goes away on its own without any special
treatment. However, prolonged diarrhoea can be a sign of other
problems. Diarrhoea can cause dehydration, which means the body
lacks enough fluid to function properly and it must be treated
promptly to avoid serious health problems.
What is the cause?
Diarrhoea may be caused by a temporary problem, like an
infection, or a chronic problem, like an intestinal disease. A few
of the more common causes of diarrhoea are bacterial infections.
Several types of bacteria, consumed through contaminated food or
water, can cause diarrhoea. Common types include Campylobacter,
Salmonella, Shigella, and Escherichia coli.
1. Viral infections: Many viruses cause diarrhoea, including
rotavirus, Norwalk virus, cytomegalovirus, herpes simplex virus,
and viral hepatitis.
2. Food intolerances: Some people are unable to digest a component
of food, such as lactose, the sugar found in milk.
3. Parasites can enter the body through food or water and settle in
the digestive system. Parasites that cause diarrhoea include
Giardia lamblia, Entamoeba histolytica, and Cryptosporidium.
4. Reaction to medicines, such as antibiotics, blood pressure
medications, and antacids containing magnesium.
5. Intestinal diseases, like inflammatory bowel disease or coeliac
disease.
6. Functional bowel disorders, such as irritable bowel syndrome, in
which the intestines do not work normally.
7. Some people develop diarrhoea after stomach surgery or removal
of the gallbladder. The reason may be a change in how quickly food
moves through the digestive system after stomach surgery or an
increase in bile in the colon that can occur after gallbladder
surgery.
8. In many cases, the cause of diarrhoea cannot be found. As long
as diarrhoea goes away on its own, an extensive search for the
cause is not usually necessary.
9. People who visit foreign countries are at risk for traveller’s
diarrhoea, which is caused by eating food or drinking water
contaminated with bacteria, viruses, or, sometimes, parasites.
Traveller's diarrhoea is a particular problem for people visiting
developing countries
What are the symptoms?
Diarrhoea may be accompanied by cramping abdominal pain, bloating,
nausea, or an urgent need to use the bathroom. Depending on the
cause, a person may have a fever or bloody stools.
Diarrhoea can be either acute or chronic. The acute form, which
lasts less than 3 weeks, is usually related to a bacterial, viral,
or parasitic infection. Chronic diarrhoea lasts more than 3 weeks
and is usually related to functional disorders like irritable
bowel syndrome or diseases like coeliac disease or inflammatory
bowel disease.
How is it diagnosed?
Diagnostic tests to find the cause of diarrhoea include the
following:
* Medical history and physical examination. The doctor will need
to know about the eating habits and medication use and will
examine for signs of illness.
* Stool culture: Lab technicians analyse a sample of stool to
check for bacteria, parasites, or other signs of disease or
infection.
* Blood tests: Blood tests can be helpful in ruling out certain
diseases.
* Fasting tests: To find out if a food intolerance or allergy is
causing the diarrhoea, the doctor may ask one to avoid lactose
(found in milk products), carbohydrates, wheat, or other foods to
see whether the diarrhoea responds to a change in diet.
* Sigmoidoscopy: For this test, the doctor uses a special
instrument to look at the inside of the rectum and lower part of
the colon.
* Colonoscopy: This test is similar to sigmoidoscopy, but the
doctor looks at the entire large intestine.
What is the treatment?
In most cases, replacing lost fluid to prevent dehydration is the
only treatment necessary. Medicines that stop diarrhoea may be
helpful in some cases, but they are not recommended for people
whose diarrhoea is from a bacterial infection or parasite,
stopping the diarrhoea traps the organism in the intestines,
prolonging the problem. Instead, doctors usually prescribe
antibiotics. Viral causes are either treated with medication or
left to run their course, depending on the severity and type of
the virus.
In adults with diarrhoea, it may help to drink plenty of fluids to
avoid becoming dehydrated. Adding bulk to the diet may thicken the
stool and decrease the frequency of stools. Certain foods thicken
the stools, including rice, bananas, yogurt, and cheese. An
increase in fibre from whole-wheat grains and bran add bulk to the
diet.
Preventing dehydration:
Dehydration occurs when the body has lost too much fluid and
electrolytes (the salts potassium and sodium). The fluid and
electrolytes lost during diarrhoea need to be replaced promptly,
the body cannot function properly without them. Although water is
extremely important in preventing dehydration, it does not contain
electrolytes. To maintain electrolyte levels, one could have broth
or soups, which contain sodium, and fruit juices, soft fruits, or
vegetables, which contain potassium.
Tips about food:
Until diarrhoea subsides, one should try to avoid milk products
and foods that are greasy, high-fibre, or very sweet. These foods
tend to aggravate diarrhoea.
As one improves, one can add soft, bland foods to the diet,
including bananas, plain rice, boiled potatoes, toast, cooked
carrots, and baked chicken without the skin or fat.
Traveller's diarrhoea happens when one consumes food or water
contaminated with bacteria, viruses, or parasites. One can take
the following precautions to prevent traveller's diarrhoea when
one goes abroad:
* Do not drink any tap water, not even when brushing your teeth.
* Do not drink unpasteurized milk or dairy products.
* Do not use ice made from tap water.
* Avoid all raw fruits and vegetables (including lettuce and fruit
salad) unless they can be peeled and you peel them yourself.
* Do not eat raw or rare meat and fish.
* Do not eat food from street vendors.
One can safely drink bottled water, carbonated soft drinks, and
hot drinks like coffee or tea. Depending on where one is going and
the period of stay, the doctor may recommend some antibiotics
before leaving to protect one from possible infection.
Washing
hand can significantly reduce episodes of diarrhoea
Remedy for diarrhoea in
adult
Healthcare Provider
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