Pustular Psoriasis

Written by Kimberly Clark
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Pustular psoriasis is one of the rarest forms of psoriasis. It is distinguished from other types of psoriasis by the appearance of pus-filled blisters, called pustules, on the skin. There are two major categories of pustular psoriasis: generalized and localized.

Generalized pustular psoriasis can appear randomly and rapidly throughout the body. In this form of pustular psoriasis, the pustules tend to dry up and peel off within two days of their initial onset. Unfortunately, they tend to frequently reappear.

What Causes Pustular Psoriasis?

The reoccurring outbreaks associated with generalized pustular psoriasis are usually preceded by a long history of bouts with the more common form of psoriasis, namely plaque psoriasis. This type of psoriasis can also be triggered by medications like lithium, beta-blockers, iodides, and withdrawal from oral steroids. The appearance of the blisters is typically accompanied by other symptoms such as fever, chills, anemia, exhaustion, and muscle weakness

Localized pustular psoriasis is so dubbed because it only appears on certain parts of the body. This form of pustular psoriasis can be further broken down into two distinct types: Palmo-plantar pustulosis (PPP) and acropustulosis. PPP appears primarily on the undersides of the hands and feet and tends to affect women much more than men. On the other hand, the lesions indicative of acropustulosis are most visible on the tips of the fingers and occasionally on the toes and tend to be very painful and debilitating.


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