Common eczema is categorized into acute eczema, subacute eczema and chronic eczema. 1. Acute eczema: common in the face, ears, hands, feet and other exposed parts. In severe cases, it can be diffuse all over the body, often symmetrically distributed. It is usually characterized by pinhead to grain-sized papules and papules. In severe cases, small blisters may appear, and in case of secondary infection, pustules, enlarged lymph nodes and fever may appear. 2. Subacute eczema: due to acute eczema inflammation is reduced or improper treatment, the course of the disease is prolonged. Symptoms are redness, swelling, oozing, pimples, dark red lesions, a small amount of scales, and still feel very itchy. 3. Chronic eczema: from acute and subacute eczema migrated, or due to mild persistent irritation and turned into chronic. Mostly seen in hands, calves, vulva, anus and other places. Mostly symmetrical appearance, manifested as the affected skin dark red spots with pimples, scratches and scales, local skin hypertrophy, surface roughness, hyperpigmentation or hypopigmentation. When eczema occurs, it is recommended to consult a doctor in time, follow the doctor’s instructions for further examination, targeted treatment or treatment with the help of the doctor.