Pervasive eczema includes acute, subacute and chronic phases. It occurs in all parts of the body and is mainly characterized by symmetrically distributed, recurrent papules accompanied by itching. 1. Acute stage: the main manifestation of the acute stage is generalized erythema, edema, on the basis of which there may be millet-like papules, papules, blisters, vesicles and oozing, accompanied by obvious itching. 2. Subacute stage: the subacute stage is characterized by a marked reduction in generalized erythema and exudation, crusting and desquamation of the vesicles, and a reduction in itching. 3. Chronic phase: the chronic phase may be manifested as generalized roughness and hypertrophy, mossy changes, which may be accompanied by pigmentation changes and nail changes. If you suffer from generalized eczema, it is recommended to go to the hospital in time, under the guidance of the doctor for active treatment.