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WELLNESS / What Is IBS? Symptoms, Causes, and Treatment Options

What Is IBS? Symptoms, Causes, and Treatment Options

What is IBS?

Irritable Bowel Syndrome (IBS) is a functional gastrointestinal (GI) disorder, meaning the digestive tract looks normal but doesn’t work properly. It mainly affects the large intestine (colon), causing a group of symptoms that occur together. Unlike structural diseases (like ulcers or cancer), IBS does not cause permanent damage to the intestines.

It’s a chronic condition that requires long-term management, though symptoms may come and go.

Common Symptoms of IBS

Symptoms vary from person to person, but usually include:

Abdominal pain or cramping (relieved by passing stool in many cases)
Changes in bowel habits:

- Diarrhea (IBS-D)

- Constipation (IBS-C)

- Mixed type (IBS-M – alternating diarrhea & constipation)

Bloating & excess gas
Mucus in stool
Feeling of incomplete evacuation after bowel movement

Types of IBS

Based on bowel habit patterns:

IBS-C (Constipation-predominant)

Hard, lumpy stools

Straining during bowel movement

IBS-D (Diarrhea-predominant)

Loose, watery stools

Sudden, urgent bowel movements

IBS-M (Mixed type)

Alternates between constipation & diarrhea

IBS-U (Unclassified)

Doesn’t fit neatly into above categories

The exact cause is unknown, but likely due to multiple factors:

Causes & Risk Factors

Gut-brain interaction problems → abnormal signaling between brain & intestines.
Gut motility issues → food moves too fast (diarrhea) or too slow (constipation).
Visceral hypersensitivity → intestines are more sensitive to pain.
Microbiome imbalance → altered gut bacteria.
Stress & anxiety → worsens symptoms.
Food intolerances → certain foods trigger flare-ups (like dairy, caffeine, gluten, fatty foods).
Post-infectious IBS → develops after stomach infection.

Risk factors:

Young age (common under 50)
Female gender (more prevalent in women)
Family history of IBS
History of stress, anxiety, depression, or trauma

Diagnosis

There is no specific test for IBS. Doctors diagnose it based on:

Rome IV Criteria: Abdominal pain at least 1 day per week in the last 3 months, plus ≥2 of:
Related to defecation
Associated with change in stool frequency
Associated with change in stool form
Rule out other conditions (like celiac disease, Crohn’s disease, ulcerative colitis, infections, lactose intolerance).

Tests may include:

Blood tests
Stool tests
Colonoscopy (if alarm symptoms like weight loss, bleeding, anemia are present)

Treatment & Management

There’s no cure, but symptoms can be managed through lifestyle, diet, and medication.

1. Lifestyle changes

Regular exercise
Stress management (yoga, meditation, counseling)
Adequate sleep

2. Dietary changes

Low FODMAP diet (avoiding fermentable foods like onions, beans, artificial sweeteners)
Limit caffeine, alcohol, fatty foods, dairy (if lactose intolerant)
Eat small, frequent meals
High-fiber diet (for IBS-C) but avoid excessive fiber if bloating is severe

3.Medications (depending on type of IBS)

For IBS-C: Laxatives (polyethylene glycol), Lubiprostone, Linaclotide
For IBS-D: Loperamide (anti-diarrheal), Rifaximin (antibiotic), Eluxadoline
For pain & cramps: Antispasmodics (Dicyclomine, Hyoscine), Peppermint oil
For anxiety/depression-related IBS: Low-dose antidepressants (SSRIs, TCAs)

4.Psychological therapies

Cognitive behavioral therapy (CBT)
Gut-directed hypnotherapy

Prognosis

IBS is not life-threatening and does not increase cancer risk.

Symptoms can be long-lasting and bothersome, but many people can manage them well with proper lifestyle, diet, and medication.

Final Thought

IBS is a chronic gut-brain disorder causing abdominal pain, bloating, and irregular bowel habits. It’s diagnosed clinically after excluding other diseases. Management focuses on diet, lifestyle, stress control, and medications tailored to symptom type.