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Living with Ataxia - deafness - intellectual disability syndrome

A rare genetic syndrome with developmental delay, balance and coordination problems, and hearing loss.

Understanding Ataxia - deafness - intellectual disability syndrome

Ataxia-deafness-intellectual disability syndrome is a rare genetic syndrome that causes developmental delay, progressive balance problems (ataxia), and hearing loss.

Ataxia starts in infancy or childhood and slowly worsens. People also have intellectual disability and hearing loss in both ears from the inner ear (sensorineural). Other features vary and can include nerve disease, weak face muscles, wasting of the leg muscles, and tight heels. GARD notes there have been no further descriptions in the medical literature since 1993.

Signs & symptoms

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

  • Poor balance and coordination (ataxia)
  • Hearing loss (sensorineural)
  • Intellectual disability
  • Low muscle tone and muscle wasting
  • Rapid eye movements (nystagmus)
  • Curved spine (scoliosis)

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 brain and nervous system specialists, ear, nose, and throat specialists, eye 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

    National Ataxia Foundation may keep lists of experts for this condition.

Care & treatment

Care team
Brain and nervous system specialists (neurologists); Ear, nose, and throat specialists (otolaryngologists); Eye disease specialists (ophthalmologists); Genetic specialists (geneticists)
Expert care
Expert lists: National Ataxia 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 National Ataxia Foundation
  • 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
What hearing tests and hearing support are right for us?
Which therapies can help with balance and movement?
Would genetic testing help our family?

Quick facts

Symptoms usually startInfant and as a Child
InheritanceAutosomal Recessive

GARD says changes in genes (also called variants) cause this syndrome. It is autosomal recessive, meaning a child inherits a changed copy of the gene from each parent.

GeneticNeurological

Also known as: adr syndrome; ataxia-deafness-intellectual disability syndrome; ataxia-deafness-retardation syndrome; ataxia-hearing loss-intellectual disability syndrome; reardon-baraitser syndrome

Patient organizations

Broader rare-disease groups

Source: NIH GARD · Ataxia - deafness - intellectual disability syndromeGARD ID 4644 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

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