ICD-11 definition : The commonest form of psoriasis, which manifests as well-defined red, scaly plaques
on the skin. Typical sites of initial involvement are the scalp, the extensor surfaces
of the elbows and knees, the lower back and the shins. In severe disease a majority
of the skin surface may be involved.;
The commonest form of psoriasis, which manifests as well-defined red, scaly plaques
on the skin. Typical sites of initial involvement are the scalp, the extensor surfaces
of the elbows and knees, the lower back and the shins. In severe disease a majority
of the skin surface may be involved.