Which skin disorder is characterized by vivid red lesions and silvery scales?

Psoriasis is characterized by vivid red lesions covered with silvery scales, making it distinct among skin disorders. This condition occurs due to a rapid buildup of skin cells, leading to the formation of thick, inflamed patches on the skin. The vivid red color arises from increased blood flow to the affected areas, while the silvery scales are the result of excess dead skin cells that accumulate on the surface.

In contrast, dermatitis typically presents with inflammation, redness, and itchiness, but does not usually feature the silvery scales found in psoriasis. Rosacea is primarily known for redness and visible blood vessels, often on the face, but it lacks the thick, scaly plaques. Acne manifests with different types of lesions, such as pustules and comedones, rather than the distinctive raised red lesions and scales seen in psoriasis. Thus, psoriasis is the correct choice due to its unique presentation of vivid red lesions and silvery scales.