There are often psoriasis patients and their families who come to the hospital asking whether psoriasis is contagious, and many others who are afraid that psoriasis will infect them and alienate themselves from psoriasis patients. Is psoriasis really contagious? Research has confirmed that even long-term close contact with psoriasis is not contagious to others. Drain Pengcheng, Department of Dermatology, Workshop
Psoriasis is a common, characteristic skin damage, chronic and easily recurring skin disease. The etiology has not been fully understood to date. In recent years many believe that genetics, metabolic disorders, infections, and immune dysfunction may be important factors in the pathogenesis. Seasonal changes, humidity, mental trauma or surgery can also trigger the disease. However, various sources have proved that psoriasis is not contagious at all. Some people think that it is not contagious how come some people have psoriasis in several families? This is because psoriasis has a certain degree of heritability. Many authors have found that the family prevalence rate is much higher than that of the general population. The literature reports a family history of 4.4%-90.9%, 10%-23% in China, and mostly 30% abroad. Genetic factors play a rather important role in the development of psoriasis.