Psoriasis usually presents with symmetrically distributed, red, scaly plaques with well-defined edges. The scale is typically silvery white, except in skin folds where the plaques often appear shiny and they may have a moist peeling surface. The most common sites are scalp, elbows and knees, but any part of the skin can be involved. The plaques are usually very persistent without treatment.
Itch is mostly mild but may be severe in some patients, leading to scratching and lichenification (thickened leathery skin with increased skin markings). Painful skin cracks or fissures may occur.
When psoriatic plaques clear up, they may leave brown or pale marks that can be expected to fade over several months.
Who gets psoriasis?
Psoriasis affects 2–4% of males and females. It can start at any age including childhood, with peaks of onset at 15–25 years and 50–60 years. It tends to persist lifelong, fluctuating in extent and severity. It is particularly common in Caucasians, but may affect people of any race. About one third of patients with psoriasis have family members with psoriasis.
How can we help?
Psoriasis is a frustrating disease and our dermatologists are up to date with the latest medications available for its treatment. Biological therapies can be effective for severe cases which meet the Medicare PBS criteria. However, most cases of psoriasis can be effectively treated with topical therapies and phototherapy.