Small intestinal bacterial overgrowth(SIBO) and irritable bowel syndrome (IBS) are different digestive system problems but cause similar symptoms. Causes and treatments are different for both diseases, but the common thing is symptoms that cause confusion in patients, and people get stuck with treatments.

SIBO vs IBS symptoms such as fatigue and brain fog, along with gas and diarrhea, can become difficult to manage. In IBS, the body becomes more sensitive due to pain in the stomach. SIBO vs IBS symptom differences include immune system activation and changes in gut microbes.
Both IBS and SIBO may be related to psychological symptoms, including anxiety and depression are responsible for reducing quality of life. The symptoms for both problems may overlap, and the actual cause may not be found, but doctors can diagnose the differences between SIBO and IBS symptoms with a breath test or by taking a sample of the fluid from your small intestine.
IBS, that is, irritable bowel syndrome, is a common gastrointestinal condition that can cause symptoms including
- Diarrhea
- Abdominal pain
- Constipation
SIBO, which is small intestine bacterial overgrowth, is the condition in which there are too many bacteria in your small intestine, and its symptoms widely overlap with IBS and other GI conditions, including:
- Intestinal motility disorder
- Chronic pancreatitis
- Celiac disease
- Inflammatory bowel disease

What is the difference between SIBO and IBS?
IBS is a condition in which there is a problem with your brain and gut interactions, and it affects nearly 12% of the people in the United States, but the exact cause is unknown, and it is associated with some conditions, including:
- Stressful events in early life
- Bacterial infection
- SIBO
- Food tolerance and sensitivities
- Anxiety and depression
IBS is further divided into different categories
- IBS with predominant constipation
- IBS with predominant diarrhea
- IBS with mixed bowel habits
SIBO
Unwanted growth of bacteria in your small intestine can cause symptoms similar to IBS, such as abdominal pain and diarrhea. But the main reason for SIBO is unknown, and SIBO is associated with conditions that can reduce stomach acid production and small intestine motility, including:
- Connective tissue disorders
- Chronic opioid use
- Diverticulitis
- Small bowel adhesions
- Diabetic neuropathy
Are The Symptoms Of SIBO And IBS The Same?
The symptoms of SIBO and IBS are not specific and overlap; due to this, many people think that they have both problems, and the symptoms occur in people, including:
- Abdominal bloating
- Excess gas
- A feeling of stomach fullness
- Abdominal cramping
- Dierrhea
- Constipation
- Fatigue
- Weight loss
- High fat level in stool
- Nutrient deficiency
- Difficulty concentrating
How Can Both Problems Be Diagnosed?
Your health care provider may perform a physical exam and review your symptoms to diagnose IBS. Apart from that, doctors follow the Rome IV criteria when they have to diagnose, and according to the Rome IV criteria, a diagnosis should be made if a patient has abdominal pain one day or more in a week in the last three months. The criteria may also be followed if a patient has abdominal pain associated with:
- Pain when having a bowel movement
- Frequent changes in your bowel movements
- Changes in the appearance of your stool
A breath test is done to find out if SIBO is present in patients.
Conclusion
SIBO and IBS are both gastrointestinal conditions with similar symptoms such as diarrhea and abdominal pain. In some cases, people experience IBS with SIBO, but based only on your symptoms, it is not possible to tell whether you are facing SIBO or IBS. To find out whether you are facing SIBO or IBS, doctors may perform tests, including a carbohydrate breathing test or jejunal aspirate culture.
If you are also struggling with gastro problems and noticing SIBO vs IBS symptoms in Ludhiana, you can book an appointment with Grover Gastro and Fertility Centre. Here, Dr. Rajiv Grover, a senior consultant and renowned gastroenterologist, can provide you with effective treatments for gastrointestinal problems.

Is it possible that the patient faces both problems at the same time?
Yes, people can struggle with both gastro problems at the same time, but it is not easy to differentiate them based on symptoms alone.
Do I need to take gastro medicine for life?
Not necessarily; you may have to take medicines for IBS for a specific period of time, not for your entire life.
Is IBS a serious condition that can cause cancer?
IBS does not cause lifelong complications, and this condition does not increase the risk of cancer in patients.
Can stress or depression also be responsible for IBS?
Due to the close relationship between the brain and the digestive system, stress or depression can increase IBS problems.