Overview
Brody myopathy (also called Brody disease or Brody syndrome) is a rare inherited muscle disorder that affects how muscles relax after they contract. Normally, when you stop using a muscle, it relaxes quickly. In Brody myopathy, the muscles — especially in the arms, legs, and face — are slow to relax. This happens because a protein called SERCA1, which pumps calcium out of muscle cells, does not work properly. Without this pump working well, calcium builds up inside the muscle, causing it to stay tightened longer than it should. The main symptom is muscle stiffness and cramping that gets worse with exercise or in cold temperatures. People often notice that after running, climbing stairs, or doing repeated movements, their muscles feel locked or stiff for a short time before slowly loosening up. This is called exercise-induced muscle stiffness or impaired muscle relaxation. Unlike some other muscle diseases, Brody myopathy does not usually cause muscle wasting or weakness, and it does not affect the heart or breathing muscles. There is no cure for Brody myopathy at this time. Treatment focuses on managing symptoms. Some people find relief with medications like calcium channel blockers (such as verapamil) or dantrolene, which help reduce muscle stiffness. Avoiding triggers like intense exercise or cold weather can also help. The condition is generally not life-threatening, and many people are able to manage their symptoms and live relatively normal lives with the right support.
Key symptoms:
Muscle stiffness after exerciseSlow muscle relaxation, especially in the arms and legsMuscle cramping during or after physical activityStiffness that worsens in cold temperaturesDifficulty opening the hands or releasing a grip after gripping somethingFacial muscle stiffnessSymptoms that improve with rest or gentle warm-upExercise intolerance — tiring more easily than expectedMuscle tightness that gradually eases after stopping activity
Autosomal recessive
Passed on when both parents carry the same gene change; often skips generations
Childhood
Begins in childhood, roughly ages 1 to 12
Treatments
No FDA-approved treatments are currently listed for Brody myopathy.
View clinical trials →Clinical Trials
View all trials with filters →No actively recruiting trials found for Brody myopathy at this time.
New trials open frequently. Follow this disease to get notified.
Specialists
View all specialists →No specialists are currently listed for Brody myopathy.
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 Brody myopathy.
Community
No community posts yet. Be the first to share your experience with Brody myopathy.
Start the conversation →Latest news about Brody myopathy
No recent news articles for Brody myopathy.
Follow this condition to be notified when news becomes available.
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 genetic testing do you recommend to confirm my diagnosis, and should my family members be tested too?,Are there medications that might help reduce my muscle stiffness, and what are the risks and benefits?,What types of exercise or physical activity are safe for me, and which should I avoid?,Should I see a physical therapist, and if so, what kind of program would be most helpful?,Are there any clinical trials or research studies I could participate in?,How will my condition be monitored over time, and what signs should prompt me to seek medical attention sooner?,Are there patient support groups or specialists with specific experience in Brody myopathy you can connect me with?
Common questions about Brody myopathy
What is Brody myopathy?
Brody myopathy (also called Brody disease or Brody syndrome) is a rare inherited muscle disorder that affects how muscles relax after they contract. Normally, when you stop using a muscle, it relaxes quickly. In Brody myopathy, the muscles — especially in the arms, legs, and face — are slow to relax. This happens because a protein called SERCA1, which pumps calcium out of muscle cells, does not work properly. Without this pump working well, calcium builds up inside the muscle, causing it to stay tightened longer than it should. The main symptom is muscle stiffness and cramping that gets worse
How is Brody myopathy inherited?
Brody myopathy follows a autosomal recessive inheritance pattern. Genetic counseling can help families understand recurrence risk and testing options.
At what age does Brody myopathy typically begin?
Typical onset of Brody myopathy is childhood. Age of onset can vary across affected individuals.