Dexamethasone works for eczema, but dexamethasone is a glucocorticoid, and systemic use is generally not routinely used in the routine systemic treatment of eczema. Eczema is a chronic, inflammatory, itchy skin disease, dexamethasone is a kind of adrenocorticotropic hormone, can inhibit the release of inflammatory substances from leukocytes and macrophages, to achieve anti-inflammatory and anti-allergic effect, so eczema dexamethasone is effective. However, the systematic use of glucocorticoids, such as dexamethasone injection, is generally not used as a routine treatment for eczema, and is generally only used to relieve symptoms when the condition is severe, and cannot be used for a long time. At the same time the drug should be used under the guidance of a doctor, pregnant women, lactating women should be used with caution, dexamethasone allergy is prohibited, it is recommended that patients seek medical treatment in a timely manner.