What Are The Five Types of Crohn's Disease?

Reviewed on 4/12/2021

There are five types of Crohn's disease that affect different parts of the digestive tract. These types include Ileocolitis, Ileitis, Gastroduodenal Crohn's disease, Jejunoileitis, and Crohn's (granulomatous) colitis.
There are five types of Crohn’s disease that affect different parts of the digestive tract. These types include Ileocolitis, Ileitis, Gastroduodenal Crohn's disease, Jejunoileitis, and Crohn's (granulomatous) colitis.

Crohn’s disease is a type of inflammatory bowel disease (IBD), a chronic inflammatory condition of the gastrointestinal tract. 

Crohn’s disease can affect any part of the gastrointestinal (GI) tract from the mouth to the anus. Another type of inflammatory bowel disease, ulcerative colitis, only affects the colon (large intestine). 

There are five types of Crohn’s disease that affect different parts of the digestive tract.  

5 Types of Crohn's Disease Chart
Condition Characteristics
Ileocolitis
  • Affects the end of the small intestine (terminal ileum) and the large intestine (colon)
  • The most common form of Crohn’s disease
Ileitis
  • Only affects the end of the small intestine (terminal ileum)
Gastroduodenal Crohn's disease
  • Affects the stomach and the beginning of the small intestine (duodenum)
Jejunoileitis
  • Characterized by patchy areas of inflammation in the upper half of the small intestine (jejunum)
Crohn's (granulomatous) colitis
  • Only affects the large intestine (colon)

What Are Symptoms of Crohn’s Disease?

Symptoms of Crohn’s disease can differ depending on the type of Crohn’s and what part of the digestive tract is affected. 

Symptoms of ileocolitis may include:

  • Diarrhea 
  • Cramping
  • Pain in the middle or lower right part of the abdomen
  • Substantial weight loss
  • Symptoms of ileitis may include:
  • Same as ileocolitis
  • Fistulas or inflammatory abscess in the right lower quadrant of the abdomen (in severe cases)

Symptoms of gastroduodenal Crohn's disease may include:

Symptoms of jejunoileitis may include:

Symptoms of Crohn's (granulomatous) colitis may include:

  • Diarrhea
  • Rectal bleeding
  • Disease around the anus, including abscesses, fistulas, and ulcers
  • Skin lesions and joint pain occur more often in this form of Crohn's 

QUESTION

What is Crohn's disease? See Answer

What Causes Crohn’s Disease?

The cause of Crohn’s disease is not completely understood. A number of factors may contribute to the development of the condition, including:

  • Genetic factors
    • Crohn’s disease tends to run in families
    • Between 5% and 20% of people with IBD have a first-degree relative, such as a parent, child, or sibling, who has IBD
    • The risk is markedly higher when both parents have IBD
    • Crohn’s disease is most common among people of eastern European descent
  • Environmental factors
    • Crohn’s disease is more common in:
      • Developed countries
      • Urban cities and towns
      • Northern climates

How Is Crohn’s Disease Diagnosed?

Crohn’s disease is diagnosed with a patient history and physical examination, along with tests to look for signs of Crohn’s disease and rule out other medical conditions. Tests may include: 

What Is the Treatment for Crohn’s Disease?

Crohn’s disease is usually treated with a combination of medication, diet changes, and sometimes surgery.

Medications used to treat Crohn’s disease include:

Diet changes used to treat Crohn’s disease include:

  • Eating a healthy, balanced diet
  • Consuming soft, bland foods during flares
  • Avoiding spicy or high-fiber foods during flares
  • Restricting dairy intake in patients who are lactose-intolerant

Surgery used to treat Crohn’s disease includes:

  • Strictureplasty: repairs a narrowing (stricture) by widening the narrowed area without removing any portion of the intestine
  • Proctocolectomy: removal of the colon and rectum
  • Fistula removal
  • Colectomy: removal of the colon
  • Bowel resection: removes a portion of the small or large intestine damaged by Crohn’s disease
  • Abscess drainage

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Reviewed on 4/12/2021
References
https://www.crohnscolitisfoundation.org/