keratopachyderma

[kĕr′ə-tō-păk′ĭ-dûrmə]
n.
  1. A syndrome of congenital deafness characterized by the formation of bandlike constrictions of the fingers and hyperkeratosis of the skin of the palms, soles, elbows, and knees appearing in childhood.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.