What Is Psoriasis? Directory
Psoriasis is a chronic skin condition that usually causes thick, itchy patches of skin that are white, silvery, or red. This type of psoriasis, called plaque psoriasis, results in scales that often appear on knees, elbows, the scalp, hands, feet, or the lower back. Other types include guttate, erythrodermic, inverse, pustular, and nail psoriasis. Find more information about the different types of psoriasis below.
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