Fig. 1.
The pseudoatrophic zone around the psoriatic papules and scheme of histological changes. From the original publication by Woronoff, 1926 (1).
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.