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Living with Colonic pseudo-obstruction

A condition where the large intestine acts blocked and widens even though nothing is physically blocking it.

Understanding Colonic pseudo-obstruction

Colonic pseudo-obstruction is a condition in which the colon acts as if it is blocked, even though nothing is physically blocking it.

The colon becomes very enlarged (megacolon) without an obvious colon disease or physical blockage. When it comes on suddenly alongside another medical condition, such as trauma, surgery, serious illness or a medication, it is called Ogilvie's syndrome.

Signs & symptoms

GARD doesn't list specific symptoms for this condition yet.

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Your doctor may refer you to a specialist who knows rare conditions.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

  4. Connect with expert centers

    Association of Gastrointestinal Motility Disorders may keep lists of experts for this condition.

Care & treatment

Care team
A doctor familiar with rare conditions, plus specialists as needed
Expert care
Expert lists: Association of Gastrointestinal Motility Disorders
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with Association of Gastrointestinal Motility Disorders
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
Is my condition acute or long-lasting?
Could another condition or medication be involved?
Which specialist should manage my care?

Quick facts

GARD doesn't describe a cause, other than that sudden cases occur alongside trauma, surgery, serious injury or illness, or medication.

Also known as: primary chronic pseudo-obstruction of colon; pseudo-obstruction of colon

Patient organizations

Source: NIH GARD · Colonic pseudo-obstructionGARD ID 7248 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Colonic pseudo-obstruction.

Explore the Colonic pseudo-obstruction blog

Explore research for Colonic pseudo-obstruction

Explore actively recruiting Colonic pseudo-obstruction studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Colonic pseudo-obstruction with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
  • Share your city to look for research near you
  • Eligibility is confirmed by the study team

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Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

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