Small Intestinal Bacterial Overgrowth

Small intestinal bacterial overgrowth (SIBO) is an excessive number of bacteria in the small intestine, causing bloating, gas, and altered bowel habits.

Table of Contents

Quick Facts

  • ICD-10: K90.9

Symptoms

  • Bloating after meals
  • Excessive gas
  • Diarrhea or constipation
  • Abdominal discomfort
  • Sometimes weight loss and nutrient deficiencies

Treatment

  • Antibiotics (rifaximin most commonly used)
  • Dietary modification (low-FODMAP)
  • Address underlying cause (motility disorders, anatomy)
Medical Disclaimer: This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider with questions about a medical condition. If you are experiencing a medical emergency, call your local emergency number immediately.

References

  • American College of Gastroenterology. SIBO Guidelines.