Erythrodermic psoriasis generally develops from plaque psoriasis or other types of psoriasis due to improper handling or treatment, which ultimately triggers the onset of this disease. Once this disease occurs, treatment should be tailored to the patient's specific clinical manifestations.

For example, if the patient's condition is severe and shows signs of electrolyte imbalance, the first step is to correct the electrolyte levels. Usually, various electrolytes need to be replenished promptly. If the patient has a significant fever, antipyretic treatment should be administered immediately.

To some extent, glucocorticoids can be used appropriately for treatment. For instance, dexamethasone or hydrocortisone can be administered through intravenous drip to control the development of the inflammation.