What is the most common type of psoriasis?

Updated: Nov 20, 2020
  • Author: Jacquiline Habashy, DO, MSc; Chief Editor: William D James, MD  more...
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Answer

Multiple types of psoriasis are identified, with plaque-type psoriasis, also known as discoid psoriasis, being the most common type. Plaque psoriasis usually presents with plaques on the scalp, trunk, and limbs (see the image below). These plaques appear as focal, raised, inflamed, edematous lesions covered with silvery-white “micaceous” scales. (See Clinical Presentation.)

Plaque psoriasis is most common on the extensor su Plaque psoriasis is most common on the extensor surfaces of the knees and elbows. Contributed by Randy Park, MD.

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