This is psoriasis, specifically plaque psoriasis. Psoriasis often presents under the age of 30 with a second group of patients who develop the condition in their 50s. The rash is symmetrical and, as in this case, involves the extensor surfaces of the body. In chronic plaque psoriasis, the individual patches have a red base with an overlying silvery scale. Often psoriasis is mild with a few patches on the elbows and knees and a flaky scalp. For patients with more severe chronic plaque psoriasis, the condition can affect daily living significantly and lead to low mood, similar to other chronic diseases.
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