Wrist red spots may be caused by eczema, contact dermatitis, allergic purpura and other reasons, you can take measures such as topical drugs, oral medication and other measures for treatment. 1. Eczema: is due to internal and external stimulation of a variety of factors, caused by the skin has a pronounced tendency to ooze skin inflammatory reaction, eczema of the skin at the wrist may cause red spots on the wrist, and some may also cause blisters, vesicles, oozing and other symptoms. You can use topical fluoride easy cream, boric acid solution and other drugs to treat, itching is serious, with loratadine, benadryl and other antihistamines. 2. Contact dermatitis: wrist skin contact with sensitizers or irritants, can cause allergic or irritant reaction, which leads to wrist red spot itching, you can apply glycerine lotion, hydrocortisone ointment and other medications; severe cases of antihistamine drugs such as loratadine, cetirizine. 3. Anaphylactic purpura: It is an inflammatory reaction of subcutaneous blood vessels, which can cause subcutaneous capillary rupture, resulting in skin hemorrhages and petechiae, which can also lead to red spots on the wrists. You can take vitamin C, tretinoin and other drugs to improve vascular permeability, and in severe cases with prednisone, dexamethasone and other glucocorticoid drugs. Wrist red spots may have other causes, it is recommended to go to the hospital to check the cause of the disease, symptomatic treatment, the above drugs need to be used in accordance with medical advice.