It may occur in association with von Zumbusch pustular psoriasis. It generally appears on people who have unstable plaque psoriasis. This means the lesions are not clearly defined. However, in some cases, people with this type of psoriasis have a history of the common variety of psoriasis, chronic plaque psoriasis, which is characterized by persistent scaly patches of skin. Psoriasis is a chronic (long-lasting) skin disease of scaling and inflammation that affects greater than 3 percent of the U. Plaque psoriasis. Pustular psoriasis.
Afebrile (except in pustular or erythrodermic psoriasis, in which the patient may have high fever). Plaque psoriasis: Most commonly affects the extensor surfaces of the knees, elbows, scalp, and trunk. Plaque Psoriasis: The most common type of psoriasis is called plaque psoriasis. (reddening of the skin), 2) formation of pustules, and 3) scaling of the skin.
Psoriasis: Practice Essentials, Background, Pathophysiology