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November 8, 2009
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Colitis

Medical Author: Benjamin C. Wedro, MD, FACEP, FAAEM
Medical Editor: Jay W. Marks, MD

Colitis Symptoms

Medical Author: Dr. Dennis Lee
Medical Editor: Dr. Jay W. Marks

Colitis is an inflammation of the colon and symptoms include abdominal pain, rectal bleeding, and cramping abdominal pain

Viewer Question: I was tested and told I have microscopic colitis, it seems that i have constant dull pain at bottom rib cage, also my joints all over my body are always stiff sore, could the stiff sore joints, shoulders, hips etc, have anything to do with the microscopic colitis?

Doctor's Response: The primary symptom of microscopic colitis is chronic, watery diarrhea . Patients with microscopic colitis can have diarrhea for months or years before the diagnosis is made. The chronic diarrhea of microscopic colitis is different from the acute diarrhea of infectious colitis which typically lasts only days to one week. Some patients with microscopic colitis also report mild abdominal cramps or pain. Blood in the stool is unusual.

What is colitis?

Colitis is inflammation of the inner lining of the colon and is associated with diarrhea, pain, and blood in the stool. There are numerous reasons for the colon to become inflamed including:

Anatomy of the colon

The colon is a hollow, muscular tube that receives products of digestion from the small intestine and ultimately eliminates them from the body through the anus. The colon is located in the abdomen and has numerous sections that are named based on their location. Colitis can affect different sections of the colon.

  • The colon begins in the right lower abdomen with the cecum (located just above the appendix) into which the products of digestion empty from the small intestine.

  • The ascending portion of the colon then ascends from the lower to the upper right side of the abdomen.

  • It traverses the abdomen as the transverse portion of the colon from the right upper to left upper abdomen before descending from the upper to the lower left side of the abdomen.

  • The last portions of the colon are the sigmoid colon low in the abdomen and finally the anus.

Picture of the Large Intestine or Colon

The colon also has several layers. The mucosa (inner layer or lining) comes into contact with the products of digestion and fluid and actively removes water and electrolytes to help solidify the feces. A layer of smooth muscle (a special type of muscle) surrounds the inner layer and is responsible for squeezing and mixing the undigested food and transporting it through the length of the colon to the anus.

What are the causes (types) of colitis

All types of colitis are associated with inflammation of the colon, though some types may be more severe and potentially dangerous than others. When a patient complains of pain and diarrhea with or without bloody stool, it is important to diagnose the type of colitis since treatments are different for the different types of colitis.



Next: Infectious colitis »

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Why should travelers see a physician before they leave?

Travelers should see a physician before leaving for a trip if they are going to developing countries, going off the usual tourist routes, or if they have chronic diseases that could be affected by travel. Travelers should protect themselves against common diseases that may be mild but that will disrupt their trip as well as protecting themselves against less common diseases that may be serious or even fatal. Some foreign countries require certain vaccinations before they will allow the traveler to enter the country. All travelers need to be up to date on routine vaccines they would normally get if they were not traveling (for example, an annual influenza vaccination if indicated). No vaccinations are required for re-entry into the United States for foreign travelers.

What diseases occur in travelers, and how can disease be prevented?

Travelers can pick up infecti...

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