Psoriasis is a chronic disease that manifests as localized scaly and thickened skin, usually on the extremities, trunk or scalp, and there are many types, none more serious than generalized psoriasis, whose lesions involve the entire body and cause a lot of physical and mental pain. Systemic psoriasis refers to severe disease psoriasis. This means that psoriasis can have different types of symptoms as the pathological features change. Systemic severe psoriasis mainly refers to generalized pustular psoriasis with erythrodermic psoriasis. Unstable common psoriasis when treated out of control, the lesions can progress and cover most of the skin, triggering erythroderma; generalized psoriasis because of the extensive skin involvement and the coexistence of pustules and skin inflammation. The main cause of generalized psoriasis is that the mutated blood virus in the body is not completely eliminated during the treatment process due to inappropriate medication or incomplete treatment, and its strong ability to survive and replicate makes it constantly synthesize and reproduce in the body. This is a great way to get the most out of your life. The actual fact is that you will need to be careful with your medication. This is because this disease is very harmful to the body, patients often accompanied by high fever, body pain and other symptoms, if not careful treatment will also be complicated by other serious diseases, may be life-threatening, so patients must pay attention. The majority of systemic psoriasis is caused by the abuse of psoriasis drugs, so it is important not to use drugs indiscriminately to treat psoriasis and to receive professional treatment at a regular hospital to avoid further deterioration of the condition and more serious consequences.