[60M] Experiencing chronic constipation with occasional abnormal stool color

Patient Description

A 60-year-old male reports suffering from chronic constipation for approximately one year and three months, which persists despite the use of laxatives. The patient describes infrequent bowel movements with stool that is normally brown, but has occasionally been black and once tan in color. The black stools are described as tarry, which may be related to the use of Pepto-Bismol. There has been a noted change in the caliber of the stool, with a recent narrowing. The patient has not experienced constipation prior to this period. Symptoms appear to worsen postprandially. No other symptoms, such as weight changes or prior occurrences of black stools, were reported.

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Arora's Assessment

What might be happening

Based on the information you've provided, you might be experiencing:

  • Chronic Constipation: This condition is characterized by infrequent bowel movements or difficulty passing stools that persists for several weeks or longer. It might be related to a low-fiber diet, lack of physical activity, or certain medications.

    • Treatment typically involves lifestyle changes such as increasing your intake of fiber and fluids, regular exercise, and sometimes over-the-counter or prescription medications.
  • Irritable Bowel Syndrome (IBS): This is a common disorder that affects the large intestine and can cause cramping, abdominal pain, bloating, gas, and changes in bowel habits (diarrhea, constipation, or both).

    • Treatment often includes diet changes, medications, and stress management.
  • Bowel Obstruction: This is a blockage that keeps food or liquid from passing through your small or large intestine. Symptoms include constipation, bloating, and abdominal pain.

    • Treatment usually involves hospitalization to clear the blockage and provide hydration and electrolyte management.
  • Colorectal Cancer: Although less likely, the presence of constipation along with narrow, ribbon-like stools could indicate a more serious condition like colorectal cancer. This is especially a concern given your age and the duration of your symptoms.

    • Treatment typically involves surgery, radiation therapy, and chemotherapy.

The presence of black, tarry stools (melena) suggests that there may be bleeding in your upper gastrointestinal tract. This could be due to a variety of conditions, including stomach ulcers or gastritis.

What you can do

Given the duration and severity of your symptoms, it is important that you seek medical attention as soon as possible. A healthcare provider can perform a physical examination and may order tests such as blood work, a colonoscopy, or imaging studies to determine the cause of your symptoms.

What you should look out for

Please seek immediate medical attention if you experience any of the following:

  • Severe abdominal pain
  • Blood in your stool or rectal bleeding
  • Unexplained weight loss
  • Persistent vomiting or vomiting blood
  • Symptoms of dehydration, such as dry mouth, decreased urination, or dizziness when standing up

Please remember that while I strive to provide accurate information, I am not a doctor. It's important to consult with a healthcare provider for a formal diagnosis and treatment.

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1 yr ago

People Also Ask


What could cause chronic constipation that doesn't improve with laxatives?

Chronic constipation that doesn't improve with laxatives could be due to underlying conditions such as irritable bowel syndrome (IBS), bowel obstruction, or even colorectal cancer. It may also be related to dietary factors, lack of physical activity, or certain medications. A thorough medical evaluation is necessary to determine the cause.


Why might someone experience black, tarry stools?

Black, tarry stools, known as melena, often indicate bleeding in the upper gastrointestinal tract, which could be due to conditions like stomach ulcers or gastritis. However, it can also be caused by certain medications, such as Pepto-Bismol, which contains bismuth subsalicylate.


What does a change in stool caliber indicate?

A change in stool caliber, particularly narrowing, can be a sign of a bowel obstruction or a more serious condition like colorectal cancer. It is important to consult a healthcare provider for further evaluation and diagnosis.


How can postprandial worsening of constipation symptoms be managed?

Postprandial worsening of constipation symptoms can be managed by making dietary changes, such as increasing fiber and fluid intake, and by engaging in regular physical activity. Stress management techniques and medications may also be helpful, depending on the underlying cause.


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