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Living with Familial thoracic aortic aneurysm and aortic dissection

An inherited condition in which the large artery leaving the heart (aorta) can stretch, bulge or tear.

Understanding Familial thoracic aortic aneurysm and aortic dissection

Familial thoracic aortic aneurysm and dissection (familial TAAD) is an inherited condition that weakens the aorta, the large artery leaving the heart.

The aorta can stretch (dilatation), form a bulge (aneurysm), or tear between its layers (dissection). When and whether this occurs varies, even within a family, from childhood to late in life. Aneurysms usually cause no symptoms, but depending on size and location may cause pain, hoarseness, or breathing problems. A dissection usually causes sudden severe chest or back pain.

Signs & symptoms

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

  • Chest pain
  • Enlarged aorta or aortic tear
  • Leaking aortic valve (aortic regurgitation)
  • Enlarged heart (cardiomegaly)
  • Breathlessness with activity
  • High blood pressure

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

    Specialists who may be involved include autoimmune and inflammatory disease specialists and genetic specialists.

  3. Ask which tests can help

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

  4. Connect with expert centers

    The Marfan Foundation may keep lists of experts for this condition.

Care & treatment

Care team
autoimmune and inflammatory disease specialists (rheumatologists); Genetic specialists (geneticists)
Expert care
Expert lists: The Marfan Foundation
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 The Marfan Foundation and other patient organizations
  • 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 often should my aorta be checked with imaging?
Would genetic testing help find the cause in my family?
Which symptoms mean I need emergency care?

Quick facts

Symptoms usually startfrom Childhood to Adulthood
InheritanceAutosomal Dominant

Changes in genes cause it. It is autosomal dominant, which means one changed copy of a gene is enough. GARD doesn't name a gene.

Genetic

Also known as: erdheim disease; familial aortic dissection; familial non-syndromic taad; familial non-syndromic thoracic aortic aneurysm and aortic dissection; familial taad; familial taad (thoracic aortic aneurysm aortic dissection)

Patient organizations

Source: NIH GARD · Familial thoracic aortic aneurysm and aortic dissectionGARD ID 2249 · 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 Familial thoracic aortic aneurysm and aortic dissection.

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