Psoriasis

Photograph of back and arms affected by psoriasis Psoriasis is an immune-mediated disease which affects the skin and joints. When it affects the skin it commonly appears as red scaly elevated patches called plaques. Psoriasis plaques are areas of inflammation which experience excessive reproduction of skin cells. Plaques frequently occur on the elbows and knees, but can affect any area of skin including the scalp and genital area. Psoriasis can vary in severity, from minor localised p ...