An official website of the United States government
Here's how you know
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Histologic examination showing leukocytoclastic vasculitis with numerous degranulating eosinophils in the blood vessel walls, a histologic image consistent with urticarial vasculitis (Hematoxylin and eosin stain; original magnification: 100× [left] and 400× [right].)