Medical Definition of Arachnodactyly

  • Medical Author:
    William C. Shiel Jr., MD, FACP, FACR

    Dr. Shiel received a Bachelor of Science degree with honors from the University of Notre Dame. There he was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.

Reviewed on 12/4/2018

Arachnodactyly: Long spider-like fingers and toes, a frequent finding in Marfan syndrome, a heritable disorder of connective tissue.

"Arachnodactyly" is derived from the Greek "arachne" (spider) and "daktylos" (finger). The Greek word was derived from the name "Arachne," a maiden in Greek mythology whom the goddess Athena turned into a spider after the girl, a skilled weaver, challenged Athena to a weaving contest.

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Reviewed on 12/4/2018