Picture of Psoriasis Vulgaris
Psoriasis vulgaris may manifest on the nails. The photo depicts "oil-spot" discoloration, or onycholysis, in a child who has psoriasis. Approximately 80% of those who have psoriasis have the most common form, psoriasis vulgaris. The characteristic red, scaly patches associated with this condition can appear anywhere on the skin of the body. The elbows, knees, trunk, nails, and scalp are most commonly affected. The white buildup on the surface of the lesions is comprised of dead skin cells called scale. These skin cells constantly slough off, often in large flakes. Affected skin is dry, itchy, and may be painful and crack easily.
Text Reference: Journal of the American Board of Family Medicine, vol. 26, 2013: "Psoriasis Vulgaris: An Evidence-Based Guide for Primary Care"