The main factors that cause eczema include the following: the first aspect is internal diseases, which may be due to immune dysfunction caused by kidney failure, leukemia or diabetes. The second aspect is caused by allergic substances, such as allergies caused by excessive consumption of beef and mutton, seafood, eggs, milk, or allergies caused by exposure to dust mites, dust mites, pollen, willow wool, etc. The third aspect is allergy caused by alcohol. The fourth area is allergy caused by drug factors, such as allergy caused by antipyretic or anti-inflammatory drugs. The fifth area is eczema caused by infections such as bacterial, viral or fungal infections. In the treatment of eczema, you need to avoid the above causes, followed by regular anti-allergy treatment, you can take oral Orotadine hydrochloride tablets and apply topical glucocorticoid ointment such as Mometasone furoate ointment or Denide ointment to treat.