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Living with Infantile cerebellar-retinal degeneration

A genetic condition present from birth that affects the brain and eyes, with delays and seizures starting around 6 months.

Understanding Infantile cerebellar-retinal degeneration

Infantile cerebellar-retinal degeneration (ICRD) is a genetic condition present from birth that involves the brain and eyes.

Symptoms usually start around 6 months of age. They include developmental delays, low muscle tone, and seizures. There is loss of brain cells in the cerebellum (the balance center). Eye findings include retinal degeneration, crossed eyes, and quick eye movements.

Signs & symptoms

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

  • Developmental delay
  • Low muscle tone (hypotonia)
  • Poor balance and coordination (ataxia)
  • Small head size (microcephaly)
  • Breakdown of the light-sensing layer of the eye
  • Crossed eyes (strabismus)

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, eye disease specialists and genetic specialists.

  3. Consider genetic testing

    Changes in ACO2 are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.

Care & treatment

Care team
Brain and nervous system specialists (neurologists); Eye disease specialists (ophthalmologists); Genetic specialists (geneticists)
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
Can genetic testing for the ACO2 gene confirm the diagnosis?
How often should my child have eye exams?
What therapies can support development?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceAutosomal Recessive
GenesACO2

Changes in the ACO2 gene cause this condition. It is inherited in an autosomal recessive pattern, meaning a child inherits a changed copy of the gene from each parent.

GeneticNeurologicalInherited Metabolic

Also known as: icrd; infantile cerebellar and retinal degeneration

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Infantile cerebellar-retinal degenerationGARD ID 13264 · 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 Infantile cerebellar-retinal degeneration.

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