Overview
Macrodactyly of toes is a rare congenital condition in which one or more toes are abnormally large at birth or grow disproportionately large during childhood. The word 'macrodactyly' literally means 'large digit.' In this condition, the bones, fat, skin, nerves, and other soft tissues of the affected toes grow more than normal, leading to toes that are noticeably bigger than the others. The condition is usually present at birth (congenital) and may involve one toe or several toes, most often on one foot only. Macrodactyly of toes can cause difficulty with walking, fitting into shoes, and may lead to pain or discomfort. Over time, the size difference can worsen as the child grows, and the enlarged toes may cause problems with the alignment of the foot. Some children may also experience self-consciousness about the appearance of their feet. There are two main types: static macrodactyly, where the enlarged toe grows at the same rate as the rest of the body, and progressive macrodactyly, where the affected toe grows faster than normal. Treatment is primarily surgical and may include debulking surgery (removing excess tissue), epiphysiodesis (stopping bone growth in the affected toe), or in severe cases, amputation of the affected toe. The choice of treatment depends on the severity, the number of toes involved, and how much the condition affects daily function. Early evaluation by a specialist is important to plan the best approach.
Also known as:
Key symptoms:
One or more toes that are noticeably larger than normalEnlarged bones in the affected toesExcess fat and soft tissue in the affected toesDifficulty fitting into shoesUneven toe size on one footStiffness in the affected toesDifficulty walking or discomfort when walkingThickened skin on the enlarged toesFoot pain or discomfortAbnormal foot alignment or postureEnlarged nerves in the affected areaSelf-consciousness about foot appearance
Clinical phenotype terms (17)— hover any for plain English
Sporadic
Usually appears on its own, not inherited from a parent
Neonatal
Begins at or shortly after birth (first 4 weeks)
Treatments
No FDA-approved treatments are currently listed for Macrodactyly of toes.
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Specialists
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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 Macrodactyly of toes.
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Caregiver Resources
NORD 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.Is my child's macrodactyly the static or progressive type, and what does that mean for their growth?,Should we do genetic testing to check for an underlying overgrowth syndrome?,What surgical options are available, and how many surgeries might be needed over time?,At what age is the best time to start surgical treatment?,What are the risks and potential complications of surgery?,Are there any non-surgical treatments or clinical trials we should consider?,How can we best support our child's emotional well-being related to this condition?
Common questions about Macrodactyly of toes
What is Macrodactyly of toes?
Macrodactyly of toes is a rare congenital condition in which one or more toes are abnormally large at birth or grow disproportionately large during childhood. The word 'macrodactyly' literally means 'large digit.' In this condition, the bones, fat, skin, nerves, and other soft tissues of the affected toes grow more than normal, leading to toes that are noticeably bigger than the others. The condition is usually present at birth (congenital) and may involve one toe or several toes, most often on one foot only. Macrodactyly of toes can cause difficulty with walking, fitting into shoes, and may
How is Macrodactyly of toes inherited?
Macrodactyly of toes follows a sporadic inheritance pattern. Genetic counseling can help families understand recurrence risk and testing options.
At what age does Macrodactyly of toes typically begin?
Typical onset of Macrodactyly of toes is neonatal. Age of onset can vary across affected individuals.