Overview
Channelopathy is a broad term used to describe a group of diseases caused by problems with ion channels in the body. Ion channels are tiny protein structures found in cell membranes that control the flow of charged particles (ions) like sodium, potassium, calcium, and chloride in and out of cells. These channels are essential for many body functions, including heartbeat regulation, muscle contraction, nerve signaling, and brain activity. When ion channels do not work properly due to genetic mutations or other causes, it can lead to a wide range of symptoms depending on which organ system is affected. It is important to note that this Orphanet entry (ORPHA:140503) is marked as OBSOLETE, meaning it is no longer used as a standalone classification. Instead, channelopathies are now classified under more specific disease categories, such as cardiac channelopathies (like Long QT syndrome or Brugada syndrome), neurological channelopathies (like epilepsy or episodic ataxia), or skeletal muscle channelopathies (like myotonia or periodic paralysis). If you have been told you have a channelopathy, it is important to work with your doctor to identify the specific type, as treatment and outlook vary greatly depending on the exact condition. Symptoms can range from irregular heartbeats and fainting spells to seizures, muscle stiffness, weakness, or episodes of paralysis. Treatment depends on the specific channelopathy and may include medications to stabilize ion channel function, lifestyle modifications, or in some cases implantable devices like defibrillators for cardiac forms.
Key symptoms:
Irregular or fast heartbeatFainting or passing out unexpectedlySeizures or convulsionsMuscle stiffness or crampingEpisodes of muscle weakness or paralysisDifficulty relaxing muscles after useDizziness or lightheadednessSudden cardiac arrestNumbness or tinglingProblems with balance or coordinationSensitivity to temperature changesChronic painFatigue or low energy
Variable
Can be inherited in different ways depending on the underlying gene
Variable
Can begin at different ages, from infancy through adulthood
Treatments
No FDA-approved treatments are currently listed for OBSOLETE: Channelopathy.
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Specialists
View all specialists →No specialists are currently listed for OBSOLETE: Channelopathy.
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: Channelopathy.
Community
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Caregiver Resources
NORD Caregiver Resources
Support, advocacy, and financial assistance for caregivers of rare disease patients.
Mental Health Support
Rare disease caregiving can be isolating. Connect with counseling and peer support.
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 specific type of channelopathy do I have, and which gene is affected?,Are there medications or activities I need to avoid because of this condition?,Should my family members be tested for this condition?,What are the warning signs of a medical emergency, and what should I do if they occur?,How often do I need follow-up testing, such as ECGs or other monitoring?,Are there any clinical trials or new treatments being studied for my specific condition?,Can I exercise, and if so, what types of physical activity are safe for me?
Common questions about OBSOLETE: Channelopathy
What is OBSOLETE: Channelopathy?
Channelopathy is a broad term used to describe a group of diseases caused by problems with ion channels in the body. Ion channels are tiny protein structures found in cell membranes that control the flow of charged particles (ions) like sodium, potassium, calcium, and chloride in and out of cells. These channels are essential for many body functions, including heartbeat regulation, muscle contraction, nerve signaling, and brain activity. When ion channels do not work properly due to genetic mutations or other causes, it can lead to a wide range of symptoms depending on which organ system is af