Erythema on the back is mostly considered to be eczema, psoriasis and other diseases, which need to be clearly diagnosed and then choose appropriate drugs, such as glucocorticosteroids, vitamin D3 derivatives, and Vitamin A acid drugs, etc., for treatment.
1. Eczema: this disease can be treated with topical glucocorticoids, such as hydrocortisone cream, mometasone furoate ointment, etc.; if there are obvious itching symptoms, it can be treated with oral antihistamine, such as loratadine, cetirizine and so on.
2. Psoriasis: it can be treated with topical glucocorticosteroids, such as trimethoprim ointment, hydrocortisone cream, etc.; or vitamin D3 derivatives, such as carbotriol, tacalcitol, etc.; if the condition is serious, it can be treated with vitamin A drugs such as Avicenna, and immunosuppressant drugs such as methotrexate, etc., if necessary.
It is recommended that the patient after a clear diagnosis, under the guidance of the doctor reasonable use of drugs, not blindly self-medication.