Dexamethasone has a strong anti-inflammatory effect. It is mainly used for active rheumatism, rheumatoid arthritis, lupus erythematosus, severe bronchitis, severe dermatitis, acute leukemia, etc. It is also suitable for postural hypotension caused by low renin and low aldosterone syndrome and vegetative neuropathy, and primary adrenal cortical hypofunction, but it is easy to cause edema if taken orally.