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Irritable Bowel Syndrome
What is Irritable Bowel Syndrome?
Irritable bowel syndrome (IBS) is a common disorder that may affect
up to 30 percent of all Americans at some time during their lives.
The disorder has many names, including Nervous Colon, Spastic Colon,
Cpastic Bowel, Mucous Colitis and Spastic Colitis. However, it should
not be confused with diseases like Ulcerative Colitis or Crohn's Disease.
IBS is a syndrome, a pattern of symptoms such as pain and bloating
that tend to occur together. It is not a "disease" in the normal sense
of the word (i.e., it cannot be caught or transmitted from person
to person as a cold can nor can it be cured by an operation or medication).
It is not life-threatening. This is a "false" colitis in comparison
to Ulcerative Colitis or Crohn's Disease which are "true" colitis
diseases.
What are the Symptoms of IBS?
People with IBS may experience constipation, diarrhea, or a combination
- constipation at some times and diarrhea at other times. In addition,
IBS may produce cramps, urgency, or a gassy, bloated feeling in the
abdomen. Mucus, sometimes seen in bowel movements, is also a symptom
of IBS. Rectal bleeding is never caused by IBS, and any rectal bleeding
must be properly and thoroughly evaluated.
What Causes IBS?
The underlying cause of this disorder is an abnormality in the way
the intestinal muscles contract. These muscles, which form the outer
layer of the intestine, work automatically to move food products along
the intestine to the rectum and out the anus. IBS is a disorder of
the function of the intestinal muscles. Even when the muscles appear
normal under a microscope, they may not function normally, contracting
too forcefully or weakly, too slowly or rapidly, at certain times.
Although there is no physical obstruction, a patient may perceive
cramps or functional blockage.
What Role does Stress Play in IBS?
Emotional stress may contribute to IBS. The brain and the intestine
are closely connected by nerve fibers that control the automatic functioning
of the intestinal muscles, and many people may experience nausea or
diarrhea when nervous or anxious. While we may not be able to control
the effect stress has on our intestines, reducing the sources of stress
in our lives - high pressure jobs, family tensions, etc. - may alleviate
the symptoms of IBS.
How Can I Tell if the Problem is IBS or Something Else?
A careful medical history and physical examination by a colon and
rectal surgeon are essential to proper diagnosis. Tests performed
to ensure that your symptoms are not caused by other problems may
include a flexible sigmoidoscopic examination, colonoscopy, a hemmocult
test to detect hidden blood in the stool, an x-ray examination of
the lower intestines and psychological evaluation. These tests may
rule out other diseases or conditions, for example; cancer, diverticulitis,
inflammation of the intestines or depression.
How is IBS Treated?
Simply understanding that IBS is not a serious or life-threatening
condition may relieve anxiety and stress, which often contribute to
the problem. Mental health counseling and stress reduction (relaxation
training) can help relieve the symptoms of IBS in some individuals.
In others, increasing the amount of non-digestible, bulk-forming foods
("roughage") in the diet may be all that is needed to relieve symptoms.
Adding roughage, such as psyllium seed, to your diet may eliminate
or lessen the severity of cramps, result in softer stools that pass
along the intestine more easily, and absorb excess water in the intestine
to prevent diarrhea. When the major complaint is constipation, additional
water should be provided in the diet along with bulk agents to soften
the stool.
In some cases, dietary roughage alone may not provide adequate relief
from cramping and bloating. Your physician may prescribe medications
that act directly on the intestinal muscles to help the contractions
return to normal. Some people obtain greater relief from one medication
than another. Therefore, your physician may recommend changing medications
to improve symptomatic relief.
Are There Any Foods to be Avoided?
Sometimes, caffeine, milk products or alcohol can make symptoms of
IBS worse. Your physician may recommend avoiding foods that contain
significant amounts of caffeine (coffee, tea, chocolate and cola drinks)
and alcoholic beverages (including beer, wine and "mixed" drinks).
Your physician may also recommend that you avoid dairy products, such
as cheese and milk, which may cause diarrhea in some people and constipation
in others. Because dairy products are an important source of calcium
and other nutrients that your body needs, be sure to get adequate
nutrients in the foods that you substitute.
In addition, smokers should beware: IBS symptoms may be aggravated
by nicotine.
How Long Does the Treatment Take to Relieve Symptoms?
Relief of IBS Symptoms is often a slow process. It may take six months
or more for definite improvement to be appreciated. Patience is extremely
important in dealing with this problem.
The tendency for the intestine to respond to stress will always be
present. With attention to proper diet, an increase in dietary roughage,
and in some cases, use of appropriate medications, the symptoms of
IBS can be greatly improved or eliminated. Mild symptoms may recur
from time to time, but rarely will become more than a minor nuisance.
Can IBS Lead to Serious Problems?
IBS does not cause cancer, bleeding or inflammatory bowel diseases,
such as Ulcerative Colitis. Over the long term, IBS can be associated
with but does not cause diverticulosis, "pockets" in the intestinal
wall, which is a benign condition. This can occasionally result in
diverticulitis, an inflammatory condition of one or more of the diverticula
or "pockets" in the intestine that sometimes requires surgery. Treatment
of IBS with bulk agents helps to prevent diverticulosis and other
colon problems. |
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