The length of the psoriasis outbreak period varies depending on the individual’s condition, so it is impossible to determine the exact time. Psoriasis is a relatively complex chronic skin disease, can occur in all parts of the body skin, usually can be divided into common psoriasis, arthropathic psoriasis, erythrodermic psoriasis, pustular psoriasis, different types of different manifestations, the treatment mode is also different, the individual severity of the disease is also different, it is not possible to determine the exact time. During the onset of psoriasis, it manifests as red scaly plaques on the peripheral skin, mostly accompanied by itching, and can sometimes involve the nails, joints, and even various systems of the body. If psoriasis occurs, it is recommended to go to the dermatology clinic of regular hospitals and choose the appropriate treatment plan under the guidance of doctors.