How do you get psoriasis and is it contagious?

Psoriasis is not contagious. Psoriasis develops when the immune system prompts certain areas of your skin to produce new cells more rapidly than usual, which leads to thickening and scaling. It’s not clear what makes this happen. The condition tends to go through cycles. Flare-ups can last weeks or even months, followed by remission for several months or even a year or longer. While psoriasis strikes more men than women, genetics are a more significant factor in who gets it. Most people with psoriasis have inherited one or more genes that affect the immune system in a way to make them prone to it.