What is psoriasis primarily characterized by?

Psoriasis is primarily characterized by itchy, scaly, red plaques with silvery gray scales. This condition is an autoimmune skin disorder that leads to an accelerated growth cycle of skin cells, resulting in the formation of thick patches on the skin. The characteristic plaques often appear on the elbows, knees, lower back, and scalp, and are commonly associated with inflammation and itching.

The inflamed, red areas are due to the underlying immune response and the presence of increased blood flow to the skin’s surface. The silvery scales that develop are a buildup of dead skin cells that occur when the skin cells proliferate too quickly. This distinct combination of features makes option C the defining representation of psoriasis, distinguishing it from other skin conditions that may present with different symptoms or characteristics.