What are the symptoms of small intestinal bacterial overgrowth (SIBO)?

Doctor's Answers 1

Photo of Dr Wai Leong Quan
Dr Wai Leong Quan

Gastroenterologist

Symptoms of SIBO

The symptoms of SIBO are generally vague and may overlap with that of irritable bowel syndrome (IBS).

These include:

  • bloating
  • flatulence
  • abdominal pain
  • poor appetite
  • nausea
  • diarrhoea

In severe cases, SIBO may cause weight loss and the disturbances may affect your mood, your sleeping pattern and work.

Diagnosing SIBO

Although clinical breath tests are available to help confirming the diagnosis of SIBO, there are significant confounding factors which may affect the test results.

Response to treatment may also varies widely from individual to individual thereby limiting their value in the overall management of the condition.

As many of the symptoms are not specific to SIBO further investigations may also be required at times to exclude other concurrent conditions.

Dr Quan

Similar Questions

How do doctors investigate and treat persistent gastric discomfort?

Looking at the response to PPI (proton pump inhibitor) and antacid, your problem is likely related to gastric acid production since both medicine reduce the acid load in your stomach. Partial treatment response may mean too short a treatment duration. This is especially so if we are dealing with ulcers in your stomach or duodenum. Having said that, persistent gastric pain should not be taken too lightly. A common test to investigate persistent gastric discomfort is endoscopy which involved inserting a flexible tube into your stomach to inspect the stomach lining.

Photo of Dr Wai Leong Quan

Answered By

Dr Wai Leong Quan

Gastroenterologist

Why do I feel bloated even after small meals?

The commonest cause of bloating is a food intolerance. The problem is not the size of the meal, but that you are probably eating food that you are not able to digest without being aware of it. The undigested food is then metabolized to hydrogen and methane gases by gut bacteria and causes bloating. Certainly reducing carbonated drinks will help to reduce the gas, but the most important thing is to identify what you are eating that you are intolerant to and that, hence, causes bloating. Our clinics employ 2 strategies for our bloated patients: 1.

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Answered By

Dr Jarrod Lee

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