Overview
Episodic ataxia type 7 (EA7) is an extremely rare neurological condition that causes repeated episodes of poor coordination and balance problems (ataxia). It belongs to a family of disorders called episodic ataxias, which are numbered types 1 through 8 based on their genetic cause and specific features. During an episode, a person with EA7 may experience unsteadiness when walking, slurred speech, and difficulty with fine movements. These episodes come and go, meaning there are periods of normal or near-normal function between attacks. Episodes can be triggered by physical or emotional stress, exercise, or other factors, though triggers may vary from person to person. EA7 was first described in a single large family, and the genetic cause has been mapped to a region on chromosome 19q13, but the exact gene responsible has not yet been definitively identified. Because so few cases have been reported, much about this condition remains poorly understood. There is currently no specific cure for EA7. Treatment is mainly supportive and focused on managing symptoms during episodes. Some medications used for other types of episodic ataxia, such as acetazolamide, may be tried, but their effectiveness in EA7 specifically has not been well established. Ongoing research into the episodic ataxias may eventually lead to better understanding and more targeted treatments for this condition.
Key symptoms:
Episodes of poor balance and coordinationUnsteady walking during attacksSlurred speech during episodesWeakness or clumsiness during episodesVertigo or dizzinessDifficulty with fine motor tasks during attacksEpisodes triggered by exercise or stressPeriods of normal function between episodes
Clinical phenotype terms (11)— hover any for plain English
Autosomal dominant
Passed on from just one parent; each child has about a 50% chance of inheriting it
Variable
Can begin at different ages, from infancy through adulthood
Treatments
No FDA-approved treatments are currently listed for Episodic ataxia type 7.
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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 Episodic ataxia type 7.
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Caregiver Resources
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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.What type of episodic ataxia do I have, and how was it diagnosed?,Are there medications that could reduce the frequency or severity of my episodes?,What triggers should I try to avoid?,Should my family members be tested for this condition?,Are there any clinical trials or research studies I could participate in?,What should I do during an episode to stay safe?,How often should I have follow-up appointments, and what monitoring is needed?
Common questions about Episodic ataxia type 7
What is Episodic ataxia type 7?
Episodic ataxia type 7 (EA7) is an extremely rare neurological condition that causes repeated episodes of poor coordination and balance problems (ataxia). It belongs to a family of disorders called episodic ataxias, which are numbered types 1 through 8 based on their genetic cause and specific features. During an episode, a person with EA7 may experience unsteadiness when walking, slurred speech, and difficulty with fine movements. These episodes come and go, meaning there are periods of normal or near-normal function between attacks. Episodes can be triggered by physical or emotional stress,
How is Episodic ataxia type 7 inherited?
Episodic ataxia type 7 follows a autosomal dominant inheritance pattern. Genetic counseling can help families understand recurrence risk and testing options.
Which specialists treat Episodic ataxia type 7?
1 specialists and care centers treating Episodic ataxia type 7 are listed on UniteRare, sourced from ClinicalTrials.gov principal investigators, published research, and the NPPES NPI registry.