papulonecrotic tuberculid

[păp′yə-lō-nə-krŏtĭk]
n.
  1. A chronic form of cutaneous tuberculosis caused by an allergic reaction to the tubercle bacillus, characterized by dusky-red papules primarily on the extremities that become crusty and ulcerated.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.