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Living with Susac syndrome

An autoimmune condition affecting tiny blood vessels in the brain, eye, and inner ear, causing confusion, hearing loss, and vision loss.

Understanding Susac syndrome

Susac syndrome is an autoimmune condition that affects the very small blood vessels in the brain, retina, and inner ear.

It has three main features: brain disease (encephalopathy), hearing loss, and vision loss. Some people don't have all three and have only some combinations. It affects women more than men. Doctors diagnose it with an exam and imaging tests. It can occur at any time in life.

Signs & symptoms

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

  • Confusion
  • Thinking and memory problems
  • Headache
  • Hearing loss
  • Vision loss
  • Low muscle tone

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, brain and nervous system specialists and eye disease 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

    Autoimmune Association and Hearing Loss Association of America may keep lists of experts for this condition.

Care & treatment

Care team
autoimmune and inflammatory disease specialists (rheumatologists); Brain and nervous system specialists (neurologists); Eye disease specialists (ophthalmologists)
Expert care
Expert lists: Autoimmune Association, Hearing Loss Association of America
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 Autoimmune Association 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
Which tests confirm this diagnosis?
How often should hearing and vision be checked?
Which specialists should be on my team?

Quick facts

Symptoms usually startany time in life

GARD says the cause is still unknown. It is an autoimmune condition.

Neurological

Also known as: red-m; retinocochleocerebral vasculopathy; retinopathy-encephalopathy-deafness associated with microangiopathy; sicret syndrome; small infarctions of cochlear, retinal and encephalic tissue

Patient organizations

Source: NIH GARD · Susac syndromeGARD ID 7713 · 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 Susac syndrome.

Explore the Susac syndrome blog

Explore research for Susac syndrome

Explore actively recruiting Susac syndrome studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Susac syndrome 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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