What does psoriasis usually look like?

Flaky red plaques. Flaky/scaly red (erythematous) thich plaques, from few mm to several CM in size.
Psoriasis . There are different types of psoriasis: plaque, guttate, pustular, erythrodermic and inverse. Attached is one of many excellent links to learn more about each type and what they will look like. https://www.psoriasis.org/about-psoriasis.

Related Questions

What does scalp psoriasis usually look like?

Scaly red plaques. Scalp psoriasis can look like dandruff, except with thicker scales and often more red. This may sometimes be itchy. When present with dandruff, we call this sebopsoriasis. In mild cases, tar shampoos like neutrogena t gel shampoo can help--lather and leave in for 5-10 minutes before washing off, 2-3x a week. Read more...