autoallergy

[ô′tō-ălər-jē]
n.
  1. An altered reactivity in which autoantibodies are produced against one's own tissues, causing a destructive rather than a protective effect.
Related formsau′to•al•lergic (ə-lûrjĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.