Psoriasis is manifested by lesions with which characteristic?

Psoriasis is manifested by lesions with which characteristic?

• A. Eczema-like red scaling patches
• B. Rosacea-like facial redness
• C. Vitiligo-like white patches
• D. Silvery scales on red patches

Answer: (D)

Classic psoriasis presents with well-demarcated red plaques covered by silvery scales. This appearance comes from rapid keratinocyte turnover, leading to a thickened epidermis with flaky, silvery scaling on inflamed skin. It often affects extensor surfaces like elbows and knees and can involve the scalp. In contrast, eczema shows red, itchy patches that may be moist or crusted; rosacea causes facial redness with visible vessels; vitiligo shows white, depigmented patches. So the hallmark finding is silvery scales on red patches.

Classic psoriasis presents with well-demarcated red plaques covered by silvery scales. This appearance comes from rapid keratinocyte turnover, leading to a thickened epidermis with flaky, silvery scaling on inflamed skin. It often affects extensor surfaces like elbows and knees and can involve the scalp. In contrast, eczema shows red, itchy patches that may be moist or crusted; rosacea causes facial redness with visible vessels; vitiligo shows white, depigmented patches. So the hallmark finding is silvery scales on red patches.