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.
Bullous, exulcerated and crusty lesions on right arm (A). Digital purpuric macules on left foot (B). Spongiosis with an intraepidermal pustule and vacuolar degeneration of the basal layer, moderately dense predominantly superficial and deep perivascular and perianexial mixed infiltrate on H&E examination, magnification at ×10 (C). Immunohistochemical staining for Alcian Blue with mucin deposits in the dermis at ×40 (D)
