Definition: A condition in which the hands and fingers, and often the feet and toes, are abnormally long and slender; a characteristic of Marfan syndrome [MIM*154700], Achard syndrome [MIM*100700], MASS syndrome [MIM*157700], and related hereditary disorders of connective tissue.
Synonym(s): spider finger
[G. arachnē, spider, + daktylos, finger]
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