1. IBS is the Most Common Cause of Chronic Abdominal Pain in People Under 50
Affects 11 percent of the general population.
Twice as common in women.
No visible damage in the intestines — looks normal on imaging and endoscopy.
2. Pain Improves After Defecation and Worsens After Eating or Stress
Pain is crampy, wave-like, located in the lower abdomen, and often relieved by bowel movements.
Triggered by eating, stress, and menstruation.
3. Main Symptoms of IBS
Abdominal pain is the most common symptom.
Bloating and distension in 85 percent of cases.
Constipation or diarrhea in 90 percent.
Urgency to defecate in 60 percent.
Mucus in stool in 40 percent.
Fatigue, nausea, and anxiety in 50 percent.
4. Main Mechanism: Visceral Hypersensitivity
Seen in around 90 percent of patients.
Brain-gut miscommunication leads to amplified pain signals from normal gut activity.
Other contributors: dysbiosis, altered motility, and SIBO (present in 40 percent of cases).
5. Types of IBS
IBS-C (Constipation-dominant)
IBS-D (Diarrhea-dominant)
IBS-M (Mixed)
IBS-U (Unclassified)
6. Low FODMAP Diet Helps ~80 Percent of Patients
Avoid onions, garlic, dairy, apples, legumes, sweeteners (sorbitol/xylitol).
Safe foods: rice, potatoes, carrots, hard cheese, eggs, poultry, fish, low-sugar fruits.
Improvement within 2–4 weeks.
7. Loperamide — First-Line for IBS-Diarrhea
Reduces diarrhea in 80 percent of cases.
Does not treat bloating or pain.
Max dose: 16 milligrams/day. Not for long-term use.
8. Rifaximin — For IBS-D With Bloating
550 milligrams, 3 times/day for 14 days.
Can repeat up to 2 times.
Especially useful if SIBO is present.
9. Polyethylene Glycol, Psyllium — First-Line for IBS-C
PEG: 17 grams daily.
Psyllium: 1–2 teaspoons daily.
Both safe long-term, but start low to reduce gas/bloating.
10. IBS is Manageable in 80 Percent of Cases
Most people control symptoms well with diet and simple medications.
Serious complications are rare.
It’s chronic but non-dangerous, and symptoms fluctuate over time.1. IBS is the Most Common Cause of Chronic Abdominal Pain in People Under 50
Affects 11 percent of the general population.
Twice as common in women.
No visible damage in the intestines — looks normal on imaging and endoscopy.
2. Pain Improves After Defecation and Worsens After Eating or Stress
Pain is crampy, wave-like, located in the lower abdomen, and often relieved by bowel movements.
Triggered by eating, stress, and menstruation.
3. Main Symptoms of IBS
Abdominal pain is the most common symptom.
Bloating and distension in 85 percent of cases.
Constipation or diarrhea in 90 percent.
Urgency to defecate in 60 percent.
Mucus in stool in 40 percent.
Fatigue, nausea, and anxiety in 50 percent.
4. Main Mechanism: Visceral Hypersensitivity
Seen in around 90 percent of patients.
Brain-gut miscommunication leads to amplified pain signals from normal gut activity.
Other contributors: dysbiosis, altered motility, and SIBO (present in 40 percent of cases).
5. Types of IBS
IBS-C (Constipation-dominant)
IBS-D (Diarrhea-dominant)
IBS-M (Mixed)
IBS-U (Unclassified)
6. Low FODMAP Diet Helps ~80 Percent of Patients
Avoid onions, garlic, dairy, apples, legumes, sweeteners (sorbitol/xylitol).
Safe foods: rice, potatoes, carrots, hard cheese, eggs, poultry, fish, low-sugar fruits.
Improvement within 2–4 weeks.
7. Loperamide — First-Line for IBS-Diarrhea
Reduces diarrhea in 80 percent of cases.
Does not treat bloating or pain.
Max dose: 16 milligrams/day. Not for long-term use.
8. Rifaximin — For IBS-D With Bloating
550 milligrams, 3 times/day for 14 days.
Can repeat up to 2 times.
Especially useful if SIBO is present.
9. Polyethylene Glycol, Psyllium — First-Line for IBS-C
PEG: 17 grams daily.
Psyllium: 1–2 teaspoons daily.
Both safe long-term, but start low to reduce gas/bloating.
10. IBS is Manageable in 80 Percent of Cases
Most people control symptoms well with diet and simple medications.
Serious complications are rare.
It’s chronic but non-dangerous, and symptoms fluctuate over time.Disclaimer:
This information is provided for general knowledge and educational purposes only. It is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always consult with your doctor for any questions or concerns you may have about your health.
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