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Genetic and Rare Diseases Information Center (GARD)

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Macrodactyly of the hand

Other Names for this Disease
  • Megalodactylism of the hand
  • Megalodactyly of the hand
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Macrodactyly of the hand is a rare condition in which a person's fingers are abnormally large due to the overgrowth of the underlying bone and soft tissue. This condition is congenital, meaning that babies are born with it. Although babies are born with the condition, macrodactyly is usually not inherited.[1]

Most of the time, only one hand is affected, but usually more than one finger is involved. Macrodactyly may also coexist with syndactyly, a condition in which two fingers are fused together. Although it is a benign condition, macrodactyly is deforming and can look cosmetically displeasing. Surgery, usually involving multiple procedures, can help the problem.[1]
Last updated: 5/17/2011


  1. Boston Children's Hospital. Macrodactyly. Accessed 5/17/2011.
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In Depth Information

  • The Online Mendelian Inheritance in Man (OMIM) is an catalog of human genes and genetic disorders. Each entry has a summary of related medical articles. It is meant for health care professionals and researchers. OMIM is maintained by Johns Hopkins University School of Medicine. 
  • PubMed is a searchable database of medical literature and lists journal articles that discuss Macrodactyly of the hand. Click on the link to view a sample search on this topic.