Overview
Epiphyseal stippling-osteoclastic hyperplasia syndrome is an extremely rare skeletal disorder that affects how bones grow and develop. The condition is characterized by two main features: epiphyseal stippling, which means there are small, dot-like calcium deposits (called punctate calcifications) in the growing ends of bones visible on X-rays, and osteoclastic hyperplasia, which refers to an overactivity of the cells that normally break down and remodel bone (called osteoclasts). This combination leads to abnormal bone development and can cause skeletal deformities, short stature, and joint problems. Because the growing ends of bones (epiphyses) are affected, children with this condition may experience difficulties with limb growth and movement. The syndrome falls under the broader category of skeletal dysplasias classified as ICD-10 code Q77.8 (other osteochondrodysplasias with defects of growth of tubular bones and spine). Due to the extreme rarity of this condition, the treatment approach is mainly supportive and symptom-based, focusing on managing skeletal complications, improving mobility, and monitoring growth. There is currently no cure or disease-specific therapy available. Orthopedic interventions and physical therapy are typically the mainstays of management.
Also known as:
Key symptoms:
Abnormal bone development visible on X-raysSmall dot-like calcium deposits at the ends of bonesShort stature or growth problemsJoint stiffness or limited range of motionSkeletal deformitiesLimb shortening or asymmetryDelayed motor milestonesBone pain or discomfortAbnormal bone remodeling
Clinical phenotype terms (10)— hover any for plain English
Neonatal
Begins at or shortly after birth (first 4 weeks)
Treatments
No FDA-approved treatments are currently listed for Epiphyseal stippling-osteoclastic hyperplasia syndrome.
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Specialists
View all specialists →No specialists are currently listed for Epiphyseal stippling-osteoclastic hyperplasia syndrome.
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 Epiphyseal stippling-osteoclastic hyperplasia syndrome.
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Caregiver Resources
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Family & Caregiver Grants
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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 is the expected course of this condition for my child specifically?,How often should we have X-rays or other imaging to monitor bone development?,Are there any genetic tests that could help identify the exact cause?,What therapies or interventions can help my child's mobility and development?,Should we be concerned about any other organs being affected?,Are there any clinical trials or research studies we could participate in?,What signs or symptoms should prompt us to seek emergency care?
Common questions about Epiphyseal stippling-osteoclastic hyperplasia syndrome
What is Epiphyseal stippling-osteoclastic hyperplasia syndrome?
Epiphyseal stippling-osteoclastic hyperplasia syndrome is an extremely rare skeletal disorder that affects how bones grow and develop. The condition is characterized by two main features: epiphyseal stippling, which means there are small, dot-like calcium deposits (called punctate calcifications) in the growing ends of bones visible on X-rays, and osteoclastic hyperplasia, which refers to an overactivity of the cells that normally break down and remodel bone (called osteoclasts). This combination leads to abnormal bone development and can cause skeletal deformities, short stature, and joint pr
At what age does Epiphyseal stippling-osteoclastic hyperplasia syndrome typically begin?
Typical onset of Epiphyseal stippling-osteoclastic hyperplasia syndrome is neonatal. Age of onset can vary across affected individuals.