Irritable bowel syndrome is one of the most common GI disorders, affecting 10–15% of the global population and roughly 20% of Jordanian women. While it doesn't cause serious disease, it heavily impacts quality of life. The ClinicsJo Editorial Team reviews symptoms and treatments.
What Is IBS?
IBS is a functional bowel disorder — diagnostic testing shows no organic damage, yet the patient suffers bothersome symptoms. It results from dysregulation of the gut-brain axis, making the colon hypersensitive to food and stress.
IBS Types
- IBS-D (diarrhea-predominant): >25% of stools loose.
- IBS-C (constipation-predominant): >25% hard.
- IBS-M (mixed): alternating diarrhea and constipation.
- IBS-U (unspecified).
Symptoms
- Recurrent abdominal pain that improves after a bowel movement.
- Bloating and gas.
- Diarrhea, constipation, or both.
- Sensation of incomplete evacuation.
- Mucus in stool.
- Gurgling bowel sounds.
- Fatigue and headache.
- Symptoms worsen with stress.
When It's Not IBS
Red flags that warrant excluding other diseases:
- Symptoms started after age 50.
- Blood in stool.
- Unexplained weight loss.
- Anemia.
- Family history of colon cancer or inflammatory bowel disease.
- Fever.
- Nocturnal diarrhea that wakes the patient.
- No response to 4–6 weeks of treatment.
Diagnosis
Clinical per Rome IV criteria:
Recurrent abdominal pain, at least one day weekly during the last 3 months, associated with 2 of:
- Defecation.
- Change in stool frequency.
- Change in stool form.
Tests to Exclude Other Diseases
- Comprehensive blood work (CBC, folate, B12, iron, ferritin).
- Thyroid function.
- Urine and stool analysis.
- Celiac disease testing (anti-tTG).
- Fecal calprotectin (elevated in IBD).
- Colonoscopy with red flags.
Treatment
1. Diet Modification
Low-FODMAP Diet
FODMAPs are short-chain carbohydrates that ferment in the gut. Strong evidence shows it helps 70–80% of IBS patients. Done in 3 phases:
- Elimination (4–6 weeks): avoid all high-FODMAP foods.
- Reintroduction: test each group individually.
- Personalization: avoid only triggers.
High-FODMAP Foods (Avoid)
- Wheat, barley, rye.
- Milk, yogurt, soft cheese (lactose).
- Beans, lentils, chickpeas.
- Garlic, onions.
- Apples, pears, watermelon, mangoes.
- Plums, cherries, dates.
- Cauliflower, mushrooms, artichoke.
- Honey, corn syrup.
- Artificial sweeteners (sorbitol, mannitol).
Low-FODMAP Foods (Allowed)
- Meat, fish, chicken.
- Rice, quinoa, oats.
- Potatoes, carrots, zucchini, cucumber, tomato.
- Unripe banana, strawberry, orange.
- Lactose-free yogurt.
- Olive oil, eggs.
2. Lifestyle Changes
- Small regular meals.
- Eat slowly and chew well.
- Drink 2–3 liters water daily.
- Moderate exercise (walking, yoga).
- Regular sleep.
- Reduce caffeine and alcohol.
- Quit smoking.
3. Stress Management
- Meditation and mindfulness.
- Yoga.
- Breathing exercises.
- Cognitive Behavioral Therapy (CBT) — strong evidence.
- Gut-directed hypnotherapy.
4. Medications
For Diarrhea (IBS-D)
- Loperamide (Imodium).
- Eluxadoline (Viberzi).
- Rifaximin (Xifaxan).
For Constipation (IBS-C)
- Soluble fiber (psyllium).
- Polyethylene glycol (Movicol).
- Lubiprostone (Amitiza).
- Linaclotide.
For Cramps and Pain
- Mebeverine (Duspatalin).
- Hyoscine (Buscopan).
- Peppermint oil.
For Psychological Symptoms
- Low-dose tricyclic antidepressants (amitriptyline 10–25 mg).
- SSRIs (sertraline, escitalopram).
5. Probiotics
Specific strains are effective:
- Bifidobacterium infantis.
- Lactobacillus plantarum 299v.
- VSL#3.
Medical tip: IBS does not turn into colon cancer or Crohn's disease. But symptoms may overlap, so accurate diagnosis matters.
Common Symptom Triggers
- Large fatty meals.
- Coffee, strong tea, alcohol.
- Spicy foods.
- Fats.
- Chocolate.
- Psychological stress.
- Poor sleep.
- Menstrual cycle (hormonal).
- Medications (NSAIDs, certain antibiotics).
IBS and Mental Health
50–90% of IBS patients have anxiety or depression. The link:
- Brain and gut communicate directly (vagus nerve).
- Stress affects colon motility.
- Gut symptoms affect mood.
Treating both yields better outcomes.
For accurate diagnosis and a personalized plan, book an appointment with a gastroenterologist or internist on ClinicsJo.
