Overview
Infantile symmetrical thalamic degeneration is an extremely rare neurological condition that was historically described in infants and involves the progressive breakdown (degeneration) of the thalamus on both sides of the brain. The thalamus is a key relay station deep in the brain that helps process sensory information, movement signals, and consciousness. When this area degenerates symmetrically in infancy, it can lead to severe neurological problems including developmental regression, seizures, movement abnormalities, and progressive loss of previously acquired skills. This condition is now classified as 'OBSOLETE' in medical databases, meaning that with advances in genetic testing and neuroimaging, cases previously grouped under this name have likely been reclassified into more specific diagnoses, such as particular mitochondrial disorders, organic acidemias, or other metabolic conditions that can cause thalamic damage in infants. Because of this reclassification, very little current medical literature uses this specific term. Families who were given this diagnosis in the past are encouraged to seek updated genetic evaluation, as modern testing may identify a more precise underlying cause, which could open doors to more targeted management and genetic counseling.
Key symptoms:
Developmental regression (losing skills the baby had already learned)SeizuresAbnormal muscle tone (too stiff or too floppy)Difficulty feeding or swallowingInvoluntary abnormal movementsProgressive loss of awareness or responsivenessVision problems or loss of visual trackingIrritability or excessive cryingFailure to reach developmental milestonesBreathing difficulties
Variable
Can be inherited in different ways depending on the underlying gene
Infantile
Begins in infancy, roughly 1 month to 2 years old
Treatments
No FDA-approved treatments are currently listed for OBSOLETE: Infantile symmetrical thalamic degeneration.
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Specialists
View all specialists →No specialists are currently listed for OBSOLETE: Infantile symmetrical thalamic degeneration.
Treatment Centers
8 centersBaylor College of Medicine Rare Disease Center ↗
Baylor College of Medicine
📍 Houston, TX
🏥 NORDStanford Medicine Rare Disease Center ↗
Stanford Medicine
📍 Stanford, CA
🔬 UDNNIH Clinical Center Undiagnosed Diseases Program ↗
National Institutes of Health
📍 Bethesda, MD
🔬 UDNUCLA UDN Clinical Site ↗
UCLA Health
📍 Los Angeles, CA
🔬 UDNBaylor College of Medicine UDN Clinical Site ↗
Baylor College of Medicine
📍 Houston, TX
🔬 UDNHarvard/MGH UDN Clinical Site ↗
Massachusetts General Hospital
📍 Boston, MA
🏥 NORDMayo Clinic Center for Individualized Medicine ↗
Mayo Clinic
📍 Rochester, MN
👤 Mayo Clinic Center for Individualized Medicine
🏥 NORDUCLA Rare Disease Day Program ↗
UCLA Health
📍 Los Angeles, CA
Travel Grants
No travel grants are currently matched to OBSOLETE: Infantile symmetrical thalamic degeneration.
Community
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Caregiver Resources
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Mental Health Support
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Family & Caregiver Grants
Financial assistance programs specifically for caregivers of rare disease patients.
Social Security Disability
Learn how rare disease patients may qualify for SSDI/SSI benefits.
Questions for your doctor
Bring these to your next appointment
- Q1.Has modern genetic testing been done to identify a specific underlying cause for the thalamic degeneration?,Are there any treatable metabolic conditions that could explain my child's symptoms?,What is the best plan for managing my child's seizures?,Should we consider whole exome or whole genome sequencing if it hasn't been done?,What supportive therapies (physical therapy, feeding support) would benefit my child?,Are there any clinical trials or research studies that might be relevant?,What palliative care resources are available to help our family?
Common questions about OBSOLETE: Infantile symmetrical thalamic degeneration
What is OBSOLETE: Infantile symmetrical thalamic degeneration?
Infantile symmetrical thalamic degeneration is an extremely rare neurological condition that was historically described in infants and involves the progressive breakdown (degeneration) of the thalamus on both sides of the brain. The thalamus is a key relay station deep in the brain that helps process sensory information, movement signals, and consciousness. When this area degenerates symmetrically in infancy, it can lead to severe neurological problems including developmental regression, seizures, movement abnormalities, and progressive loss of previously acquired skills. This condition is now
At what age does OBSOLETE: Infantile symmetrical thalamic degeneration typically begin?
Typical onset of OBSOLETE: Infantile symmetrical thalamic degeneration is infantile. Age of onset can vary across affected individuals.