Psoriasis, commonly known as psoriasis, is a chronic inflammatory skin disease with a long course and a tendency to recur, in some cases almost for life. The disease develops mainly in young adults and has a significant impact on the physical health and mental status of patients. The clinical manifestations are mainly erythematous and scaly, and can develop all over the body, with the scalp and the extremities being more common, mostly aggravated in winter. Is psoriasis contagious or not? The psoriasis patients are living in a world of ice and fire, on one side is the torture of the disease, on the other side is the object of rejection, we are afraid of being infected. So everyone is afraid to go near psoriasis patients. This leads to a lot of pressure in their hearts, so is psoriasis contagious? There are many reasons for the onset of psoriasis, the first genetic factor, which is often the topic of most concern. The first genetic factor is that one of the parents has psoriasis, then the chances of the children getting the disease is about 30%, and if both parents are psoriasis patients, then the probability of getting the disease can be as high as 70%. Although psoriasis is hereditary, it is not contagious. During the onset of psoriasis, the susceptibility genes are more active and the probability of heredity is greater. In addition, during a psoriasis attack, the patient is usually accompanied by other functional instability, which can affect the fetus and should not be pregnant at this time. Other factors are: infection, metabolic disorders, immune disorders, mental factors, and others. Patients with psoriasis pay attention to their diet, because nowadays, psoriasis can be cured. But recurrence is not guaranteed. In daily life must avoid alcohol, spicy, seafood and other stimulating food. It is important for psoriasis patients to pay attention to health care in their daily lives and to pay attention to the living environment to be dry, ventilated and bathed. Every day, they should keep a good mood, eliminate tension and face it positively. Psoriasis is not contagious. Patients, family members and surrounding relatives and friends can relieve their doubts in this regard, reduce the pressure of patients and establish a more relaxed social life environment for patients. Then they can overcome the disease and recover their health.