butterfly rash

[bŭtər-flī′]
n.
  1. A scaling lesion that appears on each cheek and is joined by a narrow band across the nose, seen in lupus erythematosus and seborrheic dermatitis.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.