Psoriasis seems to be an inherited disorder, and it appears to be related to the immune or inflammatory response . The disorder is not contagious. Normally, skin takes about a month for its new cells to move from the lower layers to the surface. In psoriasis, this process takes only a few days, resulting in the build-up of dead skin cells and formation of thick scales . The lesions of guttate psoriasis are found all over the body.
None is known.
Minimize flare-ups by avoiding aggravating factors. There is often a history of recent lung infection. Skin biopsy or scraping and culture of skin patches may be used to rule out other disorders. Treatment is focused on control of the symptoms and prevention of secondary infections . It varies with the extent and severity of the disorder.