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Related Concept Videos

Chronic Bowel Disorders: Introduction01:17

Chronic Bowel Disorders: Introduction

Chronic bowel diseases are a group of long-term conditions affecting the digestive tract, characterized by inflammation and damage to the gut lining. These conditions primarily include irritable bowel syndrome and inflammatory bowel disease.
Irritable Bowel Syndrome (IBS) is a common disorder affecting the gastrointestinal tract. The distinctive feature is recurrent abdominal pain associated with altered bowel movements, manifesting as constipation, diarrhea, or fluctuating between both. The...
Inflammatory Bowel Disease I: Introduction01:26

Inflammatory Bowel Disease I: Introduction

Inflammatory bowel disease is a group of chronic disorders marked by recurrent inflammation of the gastrointestinal tract due to an abnormal immune response against gut microflora. This leads to tissue damage. The two main forms are Crohn’s disease and ulcerative colitis.Crohn’s DiseaseCrohn’s disease is a relapsing inflammatory disorder that can affect any part of the GI tract, from the mouth to the anus. It involves all layers of the bowel wall (transmural) and shows “skip lesions” in which...
Irritable Bowel Syndrome II: Clinical Features and Diagnostic Evaluation01:30

Irritable Bowel Syndrome II: Clinical Features and Diagnostic Evaluation

Irritable Bowel Syndrome II: Clinical Features and Diagnostic Evaluation
Irritable Bowel Syndrome (IBS) is classified into subtypes based on the predominant bowel habits as determined by the Bristol Stool Form Scale (BSFS). The subtypes are:
Gastrointestinal Motility Disorders01:20

Gastrointestinal Motility Disorders

Gastrointestinal or GI motility disorders are characterized by irregular gastrointestinal tract movements, disrupting food transit from the mouth to the anus. They are caused by damage or dysfunction in gut muscles or nerves. These disorders can cause symptoms such as severe constipation, diarrhea, abdominal pain, and swallowing difficulties. Disorders can affect any segment of the GI tract and range widely in severity, from common conditions like GERD to life-threatening conditions like...
Inflammatory Bowel Disease I: Ulcerative Colitis01:27

Inflammatory Bowel Disease I: Ulcerative Colitis

Introduction
Inflammatory bowel disease, or IBD, encompasses a group of disorders characterized by chronic inflammation or ulceration of the gastrointestinal tract.
Risk Factors
The exact cause of IBD remains unclear, although it is believed to be due to a mix of genetic, environmental, microbial, and immune factors. Genetic factors are significant in determining susceptibility to IBD, with family history being a critical risk factor. Individuals with a first-degree relative who has IBD are at...
Irritable Bowel Syndrome01:23

Irritable Bowel Syndrome

DefinitionIrritable bowel syndrome (IBS) is a functional gastrointestinal disorder characterized by recurrent combinations of abdominal pain, bloating, diarrhea, or constipation.Pathophysiology of irritable bowel syndromeIts pathophysiology is multifactorial, involving disturbances in motility, sensory processing, microbial balance, barrier integrity, and gut–brain communication. These mechanisms interact to produce symptoms that vary across IBS subtypes.Altered Motility PatternsDisordered...

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Related Experiment Video

Updated: May 24, 2026

Using Multi-fluorinated Bile Acids and In Vivo Magnetic Resonance Imaging to Measure Bile Acid Transport
08:42

Using Multi-fluorinated Bile Acids and In Vivo Magnetic Resonance Imaging to Measure Bile Acid Transport

Published on: November 27, 2016

Functional bowel disorders in adults.

Winfried Häuser1, Peter Layer, Peter Henningsen

  • 1Medizinische Klinik I, Klinikum Saarbrücken.

Deutsches Arzteblatt International
|February 28, 2012
PubMed
Summary
This summary is machine-generated.

Functional bowel disorders are diagnosed using symptom assessment and tests to rule out other conditions. Treatment involves patient education, lifestyle changes, diet, medication, and psychotherapy.

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Area of Science:

  • Gastroenterology
  • Internal Medicine

Background:

  • Functional bowel disorders present with chronic abdominal pain, bloating, constipation, diarrhea, and irregular stools.
  • Approximately 50% of patients with these symptoms have no identifiable underlying somatic condition.
  • Physicians often face uncertainty regarding the necessary diagnostic work-up to exclude organic causes.

Purpose of the Study:

  • To review diagnostic and treatment guidelines for functional bowel disorders.
  • To provide clarity on the diagnostic evaluation process for patients presenting with functional bowel disorder symptoms.

Main Methods:

  • Selective literature review.
  • Inclusion of published guidelines from Germany and international sources.

Main Results:

  • Diagnosis relies on characteristic symptoms and exclusion of pathological findings.
  • Basic assessment includes physical exam, lab tests, and imaging; further tests are symptom-dependent.
  • Colonoscopy is essential to exclude underlying pathology; communication of diagnosis is key.
  • Treatment focuses on patient education, lifestyle, diet, symptomatic medication, and psychotherapy.

Conclusions:

  • Functional bowel disorder diagnosis requires thorough history and targeted tests to exclude somatic disease.
  • Diagnostic assessment and treatment should adhere to established clinical guidelines.