Management of Irritable Bowel Syndrome (IBS)

Initial Patient Education and Relationship Building

The American Gastroenterological Association recommends providing clear explanation that IBS is a disorder of gut-brain interaction with a benign but relapsing/remitting course to establish realistic expectations 1, 2
The American College of Gastroenterology suggests listening to patient concerns and identifying their specific beliefs about the condition, addressing fears directly rather than ordering more tests 1, 2
Consider having patients keep a 2-week diary of food intake and gastrointestinal symptoms to identify triggers and engage them in disease management, as recommended by the European Society for Neurogastroenterology and Motility 3
Adjust visit duration and frequency to accommodate mental health needs, especially if there is history of abuse, as advised by the National Institute of Diabetes and Digestive and Kidney Diseases 4

The American College of Sports Medicine recommends prescribing regular physical activity to all IBS patients, as exercise provides significant benefits for symptom management 1, 2
Establish regular time for defecation and ensure adequate sleep hygiene, as suggested by the American Academy of Sleep Medicine 1, 5
Promote patient empowerment through education using handouts, self-help books, websites, and apps targeting physical activity, sleep hygiene, mindful eating, and assertive communication, as recommended by the International Foundation for Functional Gastrointestinal Disorders 2

For constipation-predominant IBS (IBS-C): Start with soluble fiber supplementation (ispaghula/psyllium) at 3-4 g/day and gradually increase to avoid bloating, as recommended by the American Gastroenterological Association 1, 2, 5
Avoid insoluble fiber (wheat bran) as it worsens symptoms, particularly bloating, as advised by the European Society for Neurogastroenterology and Motility 1, 5
For diarrhea-predominant IBS (IBS-D): Decrease fiber intake, as suggested by the National Institute of Diabetes and Digestive and Kidney Diseases 2, 3

The American College of Gastroenterology recommends using antispasmodics with anticholinergic properties (dicyclomine) as first-line therapy for abdominal pain, particularly when symptoms are meal-related 1, 2, 5
Prescribe loperamide 4-12 mg daily either regularly or prophylactically (before going out) as first-line therapy to reduce stool frequency, urgency, and fecal soiling, as recommended by the American Gastroenterological Association 1, 2
Use tricyclic antidepressants (amitriptyline/trimipramine) starting at 10 mg once daily and titrating to 30-50 mg once daily for patients with mixed symptoms, refractory pain, or when insomnia is prominent, as suggested by the International Foundation for Functional Gastrointestinal Disorders 2

Refer to a gastropsychologist if IBS symptoms or their impact are moderate to severe, patient accepts that symptoms are related to gut-brain dysregulation, and has time to devote to learning new coping strategies, as recommended by the National Institute of Mental Health 2, 4
Consider IBS-specific cognitive behavioral therapy or gut-directed hypnotherapy when symptoms persist despite pharmacological treatment for 12 months, as suggested by the American Psychological Association 1, 2

Review treatment efficacy after 3 months and discontinue ineffective medications, as recommended by the American College of Gastroenterology 2, 5
Recognize that symptoms may relapse and remit over time, requiring periodic adjustment of treatment strategy, as advised by the European Society for Neurogastroenterology and Motility 2

Do not pursue extensive testing once IBS diagnosis is established in patients under 45 without alarm features, as recommended by the American Gastroenterological Association 1, 2, 5
Avoid reinforcing abnormal illness behavior through repeated unnecessary consultations and procedures, as advised by the International Foundation for Functional Gastrointestinal Disorders 3

Refer to a gastroenterology dietitian if patient consumes considerable intake of foods that trigger IBS symptoms, shows dietary deficits or nutritional deficiency, shows recent unintended weight loss, or requests dietary modification advice, as recommended by the Academy of Nutrition and Dietetics 2, 4, 5
Build collaborative links with gastroenterology dietitians and gastropsychologists to coordinate high-quality care, as suggested by the American College of Gastroenterology 1, 2

Screen for psychological disorders even if you are not a mental health provider, as gastroenterologists and dietitians may be the first to observe emotional difficulties, as recommended by the National Institute of Mental Health 4
Assess whether diagnosed co-occurring psychological disorders (anxiety or depression) are adequately treated, as under-managed anxiety and depression negatively affect responses to IBS treatment, as advised by the American Psychological Association 4