Psoriasis is a skin disease that results in itchy and scaly patches of red or purple skin which can appear anywhere on the body.
As well as being uncomfortable, the condition can seriously affect the mental health and quality of life of sufferers.
It is a chronic condition, meaning there’s no definite cure for it
Did you know some of the world's biggest stars suffer from it?
This is what they have said about life with psoriasis and, in some cases, how they have beaten it...