Erythrodermic psoriasis is the medical term for erythrodermic psoriasis, for which there is no cure. It can be treated by injecting biological agents, but due to the degree of severity of the disease and the different drugs injected, so how long it takes to get well can’t be determined, and the treatment effect may appear in 4~8 weeks. Psoriasis may be related to genetic factors, immune factors and other reasons, erythrodermic psoriasis patients will appear all over the body skin swelling, redness, and covered with a large number of scales, accompanied by itching, pain, and there will be fever, hydroelectrolyte disorders and other generalized swelling. Typically, biological agents for the treatment of erythrodermic psoriasis are usually effective in 4 to 8 weeks. At present, the commonly used biological agents include adalimumab, stavudine, etc. However, if the patient’s condition is severe or the injected drugs are different, it may also lead to changes in the time of effect of the drugs, therefore, the time of effect of the biological agent treatment of erythrodermic psoriasis cannot be generalized. If you want to know the effect of biological agents for erythrodermic psoriasis, it is recommended to go to a regular hospital to consult a doctor to clarify the relevant matters, and use the drugs under the guidance of the doctor, do not use the drugs without authorization.