hypergammaglobulinemia

[hī′pər-găm′ə-glŏb′yə-lə-nēmē-ə]
n.
  1. An increased concentration of gamma globulins in the plasma, such as is frequently observed in chronic infectious diseases.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.