Persistent Changes in Bowel Habits: When Should You Consider Colonoscopy?

Changes in bowel habits happen to almost everyone from time to time. They may be triggered by diet, stress, travel, or a temporary infection and often resolve on their own. However, when these changes persist for several weeks or are accompanied by other symptoms, they should not be ignored.

If you have noticed ongoing constipation, diarrhea, narrower stools, or a change in how often you pass stools, it may be time to seek medical advice. At Dr. Rami Hamed Center (DRHC) Dubai, our gastroenterology specialists evaluate persistent bowel habit changes using advanced diagnostic techniques, including colonoscopy, to identify the underlying cause and provide appropriate treatment.

What Are Persistent Changes in Bowel Habits?

Persistent bowel habit changes refer to ongoing differences in your normal bowel pattern that continue for more than two to three weeks. These changes may include:

• Frequent diarrhea
• Persistent constipation
• Alternating constipation and diarrhea
• Narrow or pencil-thin stools
• An increased or decreased frequency of bowel movements
• A feeling that the bowel does not empty completely
• Urgency to pass stools

Although these symptoms are often caused by common digestive disorders, they can sometimes indicate more significant conditions that require further investigation.

What Can Cause Changes in Bowel Habits?

Several digestive conditions may affect bowel habits, including:

• Irritable Bowel Syndrome (IBS)
• Diarrhea caused by infections or food intolerance
• Inflammatory Bowel Disease (IBD)
• Diverticular disease
• Colon polyps
• Colorectal cancer
• Dietary changes or certain medications

Because different conditions can produce similar symptoms, medical evaluation is important if symptoms continue.

When Should You Consider a Colonoscopy?

A colonoscopy is often recommended when bowel habit changes cannot be explained by a temporary illness or when there are additional warning signs.

Your gastroenterologist may recommend a colonoscopy if you have:

• Changes in bowel habits lasting longer than two to three weeks.
• Blood in the stool or rectal bleeding.
• Persistent abdominal pain or cramping.
• Unexplained weight loss.
• Iron-deficiency anaemia.
• A positive stool or FIT test.
• A family history of colorectal cancer or colon polyps.
• Reached the recommended age for colon cancer screening.

Colonoscopy allows doctors to directly examine the lining of the colon and identify conditions that cannot be diagnosed through symptoms alone.

How Can Colonoscopy Help?

Colonoscopy is considered the gold standard for examining the large intestine. During the procedure, a thin flexible camera is gently passed through the rectum to inspect the colon.

It can help:

• Identify the cause of persistent bowel symptoms.
• Detect inflammation or infection.
• Find and remove colon polyps.
• Take biopsies for laboratory analysis.
• Diagnose colorectal cancer at an early stage.

Because colonoscopy is both a diagnostic and therapeutic procedure, certain abnormalities can often be treated during the same examination.

Preparing for Colonoscopy

Before the procedure, your doctor will provide bowel preparation instructions to completely clean the colon. A clean bowel allows the specialist to clearly examine the intestinal lining and improves the accuracy of the examination.

The procedure is usually performed under sedation, allowing most patients to remain comfortable throughout the examination.

When Should You Seek Medical Attention?

You should arrange an appointment with a gastroenterologist if your bowel habit changes are accompanied by:

• Blood in the stool.
• Black or tarry stools.
• Persistent abdominal pain.
• Unexplained weight loss.
• Persistent bloating.
• Fatigue or symptoms of anaemia.
• A family history of colorectal cancer.

Early assessment can help identify treatable conditions before complications develop.