Plaque Psoriasis

Plaque Psoriasis

Plaque psoriasis is the most common type of psoriasis - 90% of people who have psoriasis have this type.

Plaque psoriasis is so called because patches or lesions of red skin known as ‘plaques’ form on the skin. Silvery-white scales or flakes can also develop. These patches vary in size and thickness. Sometimes the patches can bleed if the skin is knocked or scratched.

Where is it found?

It is most common on your knees, elbows, scalp and lower back. The patches are usually symmetrical on your body, i.e. on both knees or both elbows.

About 50% of people with plaque psoriasis may also have thickened and pitted fingernails and toenails.

Click here to see an example of what plaque psoriasis looks like.

Who gets it?

Plaque psoriasis can affect anyone. Sometimes it occurs because there is a history of psoriasis in your family although this is not always the case. Whilst it can appear at any age, most cases of plaque psoriasis occur before the mid-40s.

If you think you may have plaque psoriasis you should consult your healthcare team, who will be able to advise you on suitable treatment.

Further reading

Griffiths C and Barker J. Pathogenesis and clinical features of psoriasis. Lancet 2007; 370: 263-271

Naldi L, Gambini D. The clinical spectrum of psoriasis. Clinics in Dermatology 2007;25:510–518

Sabat R et al. Immunopathogenesis of psoriasis. Experiment Dermatol 2007; 16: 779–798