What is the characteristic presentation of psoriasis?

Updated: Jan 30, 2020
  • Author: Ginard I Henry, MD; Chief Editor: Gregory Gary Caputy, MD, PhD, FICS  more...
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Answer

Answer

Psoriasis is characterized by exceedingly rapid turnover of skin. This occurs on the order of 7-10 times faster than the normal 28-day cycle of skin renewal. The histomorphologic characteristics include parakeratosis and acanthosis. Characteristics but not pathognomonic findings are spongiform pustules of Kogoj and Munro microabscesses. A spongiform pustule is a local subcorneal neutrophil collection while Munro microabscesses are intracorneal neutrophil collection.


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