Generalized Pustular Psoriasis - Classification of Pustular Psoriasis

Classification of Pustular Psoriasis

Ryan and Baker identified two forms of GPP: the Zumbusch pattern and the annular pattern. These forms represent two of four categories of GPP as shown in the table below.

Source: “Table I” from “Pustular Psoriasis”, Farber and Nall, 1993

It is important to note that while there are different forms of GPP, they are not exclusive of each other. One can morph into another, or multiple forms can occur simultaneously.