Skin eczema is divided into three categories: acute eczema, subacute eczema and chronic eczema, which may have different symptoms at different times and cannot be generalized. 1. Acute eczema: acute eczema patients will appear more intensive papules, papules, small blisters, vesicles, oozing and other lesions, accompanied by intense itching. 2. Subacute eczema: If acute eczema is not cured for a long time, it may develop into subacute eczema. The manifestation of redness and oozing is reduced, but there can still be papules and a small number of papules, the lesions are dark red, there may be a little scaling and mild infiltration. There may be a little scaling and mild infiltration. The rash is still self-conscious with intense itching. Re-exposure to allergens, new stimuli or improper treatment can lead to acute flare-ups, if not cured for a long time, it can develop into chronic eczema. 3. Chronic eczema: If acute eczema, subacute eczema is not treated for a long time, it may gradually change into chronic eczema. Chronic eczema patients will appear in the lesions of skin thickening, hyperpigmentation, surface roughness, a small amount of scales, crusting symptoms. Self-consciousness also has obvious itching, often paroxysmal. The condition may be mild or severe, lasting for several months or longer. When the patient appears the phenomenon of skin eczema, it is recommended to consult a doctor in time, diagnosed and treated by a professional doctor.