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Crohns Disease Introduction |
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Crohn's disease
is a chronic inflammatory disease of
the GI tract. It is also known as
Regional Enteritis, Granulomatous
Ileitis, and Ileocolitis. It mainly
affects the ileum and the colon, but
it can occur at any site along the
digestive tract. Crohn's
disease causes ulcerations in the
wall of the intestine. These
ulcerations are patchy (skip
lesions) and not confluent like the
lesions of Ulcerative Colitis. As a result of the damage to the
wall, individuals may experience bleeding
(anemia), malabsorption
(malnutrition), fissures and
fistulas (infection), and
obstruction of the GI tract. [1]
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There is no known
cause of Crohn's disease. It is,
however, thought to be mediated by autoimmune reactions. These reactions
directly impact the GI tract and can be due to
environmental, dietary, and
infectious agents. The immune
response, or reaction, often causes inflammation in the affected
area. It is this inflammation that
leads to ulcer formation in the
lining of the intestine. Over time,
the ulcers proliferate and
inflammation occurs in nearby
tissues.[2]
Crohn's disease
affects both men and women equally. Peak incidence is between the ages
of 14-24, though it can occur for
the first time in the 50-70's (known
as second wave). Over the past
few decades, this condition has
become more common in Western
societies, with the Jewish population
being the most affected. As
with many chronic conditions, there
are increases in the prevalence
of Crohn's disease in families with one member already
diagnosed. [3]
The most common
presenting features of Crohn's
disease are; chronic diarrhea,
weight loss, abdominal pain, fever,
and right lower quadrant fullness. Patients may complain of loss of
appetite and fatigue. Some patients
may be diagnosed after presenting to
the ER with an acute abdomen. Rectal
bleeding and blood in the stool are
also common symptoms. [4]
On examination, individuals with Crohn's disease
may have fissures or fistulas in the
perianal area. These persons may
also have anemia, or suffer from a concurrent infection
in the GI tract. Enlarged
lymph nodes
are common and are caused by an
inflammatory response. Children who are diagnosed
with Crohn's disease may
also suffer from severe
malnutrition and growth retardation. If obstruction is the
primary presenting
sign, individuals may exhibit
constipation, fullness, nausea, and
even vomiting. [5]
The worst
complication of Crohn's disease
is the perforation of the bowel, which
results in fecal material entering
the abdominal cavity. This causes
severe infection and inflammation in the
nearby organs, as well as a risk of
severe bleeding. [6]
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Crohns Disease Statistics |
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At least 500,000
Americans have been diagnosed with Crohn's disease.
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10% or 50,000 of
those diagnosed will be less than 18
years old.
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20-25% of individuals
diagnosed will also have a relative
with the disease.
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An individual has 10
times the risk of developing
Crohn's disease if a relative
has the disease.
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If a brother or
sister has the disease the risk
increases to 30 times.[7]
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Learn More About
Crohns Disease |
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