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Jun 04, 2006

Diagnosis: Chronic Diarrhea

by SirGan

SteadyHealth.com - Health Topics Forum Index -> Articles archive

Diarrhea is one specific and very common disorder characterized by an increase in the amount, frequency, and wateriness of bowel movements. Although normally the colon can absorb several times more fluid than is required on a daily basis, this condition occurs when the colon’s capacity is significantly exceeded. Usually, diarrhea is not some so serious symptoms which means it occurs more than three times in one day, may last a day or two, and then goes away on its own.
There are two types- acute and chronic! Acute diarrhea lasts for 1 to 2 weeks. Chronic diarrhea is an ongoing problem, lasting for longer than 23 weeks. Unlike the acute type, for a healthy person chronic diarrhea may be a nuisance problem, but for someone who has a weak immune system, a life-threatening illness. 

Mechanism of the condition

Mechanism is well studied and experts are saying that the real cause of diarrhea are osmotic substances! These substances with osmotic properties are capable of drawing water to the intestine. They are present in the stool, forcing water from the intestines to be excreted, resulting looser stools. Bloating and flatulence often occur.

Possible causes of chronic diarrhea

Several studies done in the past have shown that there are many causes of diarrhea. What's good about it? In most cases, changes in bowel habits characteristic to diarrhea are short lived and clear up on its own. Whenever diarrhea lasts more than two or three weeks, medical help and advising is generally recommended. Some of the most common reasons are: 

Food

It is well known fact that most people have experienced diarrhea after certain foods that have eat. Different types of food cause different diarrhea patterns! For example many people are intolerant of milk and milk products so that even small amounts of the milk sugar lactose can cause diarrhea and some other have low tolerance for hot pepper. It is proven that also large amounts of fatty foods cause the diarrhea problem in other people. It is proven also that some sugars can cause diarrhea. The artificial sugar sorbitol, which is normally used as a sweetener and often used to sweeten diet gums and candies but it is proven that some of its ingredients could have properties that can cause diarrhea! Mannitol is another sweet substance frequently found with sorbitol.

Chemical Laxatives

Although sometimes laxatives couldn’t be avoided and they could be even recommended, many people become dependent on them early in life and use them on a daily basis.
Most commonly used are:
    • magnesium (Epsom salt),
    • cascara (Nature's Remedy),
    • phenolphthalein (Exlax, Correctol, Feen-A-Mint)

Prescription Drugs

Every person should know that if a change in bowel habit occurred after taking some new drug, never mind for what it is- that could be the possible cause of diarrhea and the physician should be contacted. It is well known that antibiotics can cause diarrhea. Diarrhea can develop up to one month after taking antibiotics.

Infection

There are many different bacteria and many viruses and other infectious agents that find their way into our bodies and cause diarrhea! One of the most serious bacterial infections that can cause diarrhea is salmonella infection!  It is rather serious and require medical evaluation. Salmonella commonly comes from contaminated poultry. Other bacteria that can cause diarrhea are: Campylobacter, Clostridium difficile, Escherichia coli, Listeria onocytogenes, Shigella…
There are also some parasites, such as amoeba and giardia, Cryptosporidium parvum, Cyclospora cayetanensis, Entamoeba histolytica that attack the intestines and cause diarrhea! Virus infection is probably the most common cause of short term diarrhea and, fortunately, it usually clears up on its own. Most common viral infections related to diarrhea are HIV, rotavirus, Norwalk agent…

Traveler's Diarrhea

This is the very common and very specific condition that is for always observed as a separate condition! It is now proven that the cause of traveler's diarrhea is a toxic bacterium called Escherichia Coli. What's good about this? This infection can often be prevented by avoiding fresh, uncooked produce and fruits. It comes also all the non-bottled beverages.

Certain Diseases

Several researches have proven that there are certain intestinal disorders that can cause chronic diarrhea. These include ulcerative and microscopic colitis, Crohn's disease, diverticulosis, and even colon cancer. Diabetes, thyroid and other endocrine diseases also cause diarrhea in most of the cases. There is no need to point out that these are all serious diseases that require careful medical attention and treatment.  

Stress and Irritable Bowel Syndrome

Irritable bowel syndrome is a problem that occurs when the intestines, especially the colon do not contract in a smooth, rhythmic manner. It is characterized with abdominal pain, distention, and stool with mucous. Sometimes there is alternating constipation and diarrhea. It is proven that emotional stress often aggravates these symptoms.

Malabsorption

Because certain foods cannot be absorbed properly- they are passed into the stool, resulting in diarrhea in an attempt to excrete them. Besides diarrhea, symptoms include weight loss, and nutritional deficiencies. Causes include bacterial overgrowth, chronic pancreatitis, previous intestinal resections, and lymphatic obstruction.

Motility disorders

It occurs as a result of too rapid a transit of intestinal materials, allowing insufficient time for food and water to be absorbed.

Food allergies

The fact is that true food allergies are rare as a cause of chronic diarrhea and persons allergic to some foods such as strawberries or shellfish experience only a short-lived intestinal upset.

Symptoms of chronic diarrhea

The main symptom of diarrhea is frequent, loose, watery bowel movements, or stools. Other possible symptoms are:

Dehydratation

When diarrhea continues without the replacement of lost fluids, patient is high risk of becoming dehydrated, which can cause serious health problems, especially in children and the elderly. Symptoms of dehydration include dry mouth, dry eyes, infrequent urination, and urine with a dark color and strong odor and fever, nausea, vomiting, and stomach pain, in more serious cases.
  • malnutrition

  • weight loss

Who is at risk for chronic diarrhea?

It is reasonable that persons with severely weakened immune systems, such as those with AIDS, or some that are taking certain types of chemotherapy, who have recently received an organ transplant, are at greater risk of developing problems with chronic diarrhea.  

Diagnosis of chronic diarrhea

Bad thing about diarrhea is that diagnosis may be difficult and requires from a doctor to take a careful history and perform a physical exam. There are several test that could be done in order to confirm the diagnosis and the most common are:
  • blood or stool tests
Complete blood count, thyroid function tests, Electrolytes, Calcium, Phosphorus, albumin, and liver function tests are commonly used. Beta-carotene and Prothrombin time may be helpful.
  • stool cultures may be used to test for bacteria
  • Special stains - they may be required to look for some parasites
  • radiographs (x-rays)
  • endoscopy - procedure in which a tube is inserted into the mouth or rectum so that the doctor can look directly at the intestine
  • Abdominal CT scans – they may show chronic pancreatitis, colon cancer, and signs of Crohn's Diseases (ileitis) or pancreatic endocrine tumors

Treatment of chronic diarrhea

The fact is that the treatment of diarrhea depends upon the cause.
  • Diarrhea caused by an infection should be treated with appropriate antibiotics.  
  • It is reasonable that diarrhea not caused by an infection is more difficult to diagnose and treat. Long-term medication or surgery may be required.  
  • If the cause, such as sorbitol or a certain drug, is removed, the diarrhea usually stops and the body can heal.
  • beans and spicy food should be avoided during the treatment
  • A banana, rice, applesauce, and toast (BRAT) diet has been recommended for years
  • fluids should be replaced and that’s why water or electrolyte drinks that contain a balance of water, sugar, and salt should be used
  • beverages containing caffeine, such as tea, coffee, and soft drinks shouldn’t be used
  • foods containing starch, such as cereals, crackers, rice, and mashed potatoes, are very easily digested
  • Hygiene and isolation are important in limiting spread of the disease.

Medications:

  • Loperamide (Immodium)
  • Diphenoxylate with atropine (Lomotil)
  • Codeine, tincture of opium, and paregoric
  • Cholestyramine
  • Octreotide
  • Clonidine patch

How is chronic diarrhea spread?     

Every patient and all the persons that come in the contact with them should know that chronic diarrhea caused by an infection can be spread by drinking water or eating food contaminated with stool. This means that every close contact with a person who has diarrhea may also spread infection. The fact is also that chronic diarrhea not caused by an infection is not spread to other people.

How can chronic diarrhea be prevented? 

There are some tips which can reduce the chance of getting infection and they are:
  • Drink clean or purified water
  • Use proper food-handling techniques
  • Maintain proper hand-washing habits
  • Avoid dairy products, fatty foods, high-fiber foods or seasoned foods
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    Article sources
    • www.healthlink.mcw.edu
    • www.ibscrohns.about.com
    • www.hmc.psu.edu