Can psoriasis infect people?

Psoriasis is not contagious, this disease has no clear pathogen, so it is not infectious. This disease has a certain genetic predisposition, so it may cause familial outbreaks. The disease mainly occurs in the skin surface erythema, in the erythema above can see silver, silver white dander, the vast majority of psoriasis patients will be accompanied by obvious itching, if scratching dander, you can see obvious punctate bleeding on the local skin. The disease has a genetic predisposition but is not 100% inherited, inherited is prone to psoriasis constitution. once the immune system is reduced, people with this constitution may trigger psoriasis attacks.