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Living with Cystic echinococcosis

A parasite infection that forms cysts, often in the liver, caught from dogs or contaminated food.

Understanding Cystic echinococcosis

Cystic echinococcosis, also called hydatidosis, is an infection caused by the larval stage of the Echinococcus granulosus tapeworm.

The adult tapeworm lives in the intestines of dogs. People can become infected through contact with herding dogs or by eating food contaminated with dog feces. GARD lists the onset as adulthood.

Signs & symptoms

Symptoms vary from person to person. GARD lists these among the most common:

  • Cysts in the liver
  • Pain in the upper middle belly
  • Fatigue
  • Weight loss
  • Liver disease with blocked bile flow (cholestasis)
  • High eosinophil count (a type of white blood cell)

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.

Care & treatment

Care team
A doctor familiar with rare conditions, plus specialists as needed
Expert care
Ask about multidisciplinary care centers for rare conditions
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 rare disease patient organizations for support
  • 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
How are cysts found and confirmed, such as with imaging or blood tests?
Which specialists should manage our care?
How can we avoid infection from dogs or food?

Quick facts

Symptoms usually startAdult

It is caused by the Echinococcus granulosus tapeworm. People are infected through contact with herding dogs or by eating food contaminated with dog feces.

Infectious

Also known as: echinococcus granulosus; echinococcus granulosus infection; echinococcus granulosus infection of lung; echinococcus granulosus infection of thyroid; echinococcus granulosus infectious disease of liver; echinococcus granulosus infectious disease of thyroid

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Cystic echinococcosisGARD ID 2764 · 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 Cystic echinococcosis.

Explore the Cystic echinococcosis blog

Explore research for Cystic echinococcosis

Explore actively recruiting Cystic echinococcosis studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Cystic echinococcosis 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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