A secondary skin lesion appearing as round, dry patches of skin covered with rough, silvery scales is called:

The secondary skin lesion characterized by round, dry patches of skin covered with rough, silvery scales is indeed identified as psoriasis. Psoriasis is a chronic autoimmune condition that accelerates the life cycle of skin cells, leading to the buildup of cells on the surface of the skin, which form plaques that are often itchy and can be quite uncomfortable. The silvery scales are a hallmark of this condition and can vary in severity and location on the body.

In contrast to the other listed conditions, eczema (also known as atopic dermatitis) typically presents with red, inflamed, and itchy skin and does not usually exhibit the silvery scaling seen in psoriasis. Dermatitis refers to inflammation of the skin and encompasses a variety of conditions, including eczema, which can sometimes resemble psoriasis but lacks the distinctive scaly patches. Rosacea is primarily characterized by facial redness and vascular lesions rather than the scaly patches associated with psoriasis. Each of these conditions has unique features that differentiate them from psoriasis, making it crucial to recognize the specific symptoms of each to determine the correct diagnosis.