Types of Psoriasis

Plaque psoriasis, guttate psoriasis, and inverse psoriasis are a few of the many forms of psoriasis, a skin disease that causes scaling and swelling. Each psoriasis type has its own characteristic symptoms and risk factors, but they are all related to rapid cell turnover.

An Introduction to the Types of Psoriasis

Psoriasis is a skin disease that causes scaling and swelling. Normally, skin cells grow deep in the skin and slowly rise to the surface. This process is called cell turnover, and the process takes about a month. With psoriasis, it can happen in just a few days because the cells rise too fast and pile up on the surface.
 
Psoriasis affects 2 percent to 2.6 percent of the U.S. population, or between 5.8 and 7.5 million people. Anyone can get psoriasis, but it occurs more often in adults. Sometimes there is a family history of psoriasis. Certain genes have also been linked to the disease. Psoriasis occurs in both men and women equally.
 
There are several different types of psoriasis. Some of these types include:
 
Plaque Psoriasis
Plaque psoriasis is characterized by skin lesions that are red at the base and covered by silvery scales.
 
Guttate Psoriasis
This psoriasis type is characterized by small, drop-shaped lesions that appear on the trunk, limbs, and scalp. Guttate psoriasis is most often triggered by upper respiratory infections (for example, a sore throat caused by streptococcal bacteria).
 
Pustular Psoriasis
This type of psoriasis is characterized by blisters of noninfectious pus that appear on the skin. Attacks of pustular psoriasis may be triggered by medications, infections, stress, or exposure to certain chemicals.

Information on Psoriasis

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