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colloid acne

n.
  1. Colloid degeneration of the elastic tissue of the dermis due to repeated exposure to sunlight over a period of many years.actinic elastosis elastosis colloidalis conglomerata
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.