PSI Barbering Practice Exam

Which skin condition is characterized by silvery scales or plaques?

1. Eczema

2. Psoriasis

3. Contact dermatitis

4. Fungal infection

The correct answer is: Psoriasis

The skin condition characterized by silvery scales or plaques is psoriasis. This chronic autoimmune disorder leads to the rapid buildup of skin cells, which forms these distinct, scaly patches that can appear anywhere on the body, though they are most commonly found on the elbows, knees, scalp, and lower back. The silvery appearance is due to the accumulation of dead skin cells that have not been shed properly. In contrast, eczema typically manifests with red, inflamed, and often itchy patches rather than silvery scales. Contact dermatitis is usually the result of an allergic reaction or irritation from substances coming into contact with the skin, leading to redness and swelling, but not silvery plaques. Fungal infections can cause scaling but are generally associated with different colors and types of lesions rather than the distinctive silvery scales seen in psoriasis. Understanding these distinctions helps to accurately identify and treat various skin conditions.