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Living with Leukoencephalopathy with bilateral anterior temporal lobe cysts

A rare brain condition beginning in infancy with learning and movement delays, muscle stiffness, and cysts seen on MRI.

Understanding Leukoencephalopathy with bilateral anterior temporal lobe cysts

Leukoencephalopathy with bilateral anterior temporal lobe cysts is a rare nervous system condition that does not get worse over time.

It is marked by intellectual disability, muscle stiffness (spasticity), and delayed movement skills. MRI shows cysts in the front of the temporal lobes on both sides and white matter changes. It begins in the first few months of life. Hearing loss and a small head have also been reported.

Signs & symptoms

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

  • Intellectual disability
  • Global developmental delay
  • Absent speech
  • Muscle stiffness in the legs (spasticity)
  • Small head (microcephaly)
  • Hearing loss (sensorineural)

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 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

    United Leukodystrophy Foundation may keep lists of experts for this condition.

Care & treatment

Care team
Brain and nervous system specialists (neurologists); Genetic specialists (geneticists)
Expert care
Expert lists: United Leukodystrophy 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 United Leukodystrophy 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
Which specialists should follow development and movement?
Would genetic testing help find the cause?
Should my child have regular hearing checks?

Quick facts

Symptoms usually startNewborn and as an Infant

GARD says the cause is unknown, but an autosomal recessive pattern of inheritance has been suggested.

GeneticNeurological

Also known as: leukoencephalopathy co-occurrent with bilateral anterior temporal lobe cysts

Patient organizations

Broader rare-disease groups

Source: NIH GARD · Leukoencephalopathy with bilateral anterior temporal lobe cystsGARD ID 19917 · 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 Leukoencephalopathy with bilateral anterior temporal lobe cysts.

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