The causes of eczema on the palms of the hands include heredity, allergen exposure, and secondary to other diseases. 1. Heredity: Studies show that 70% of children of parents with genetic allergies will suffer from eczema and are also allergic. 2. Allergen contact: common allergens for this disease are soap, detergent, dust, animal fur, peanuts, soybeans, etc. Secondly, eczema is also prone to occur if the hands are in a hot, dry or humid environment for a long time. 3. Secondary to other diseases: clinically seen in diabetes, thyroid disease, autoimmune diseases, chronic infections and other diseases, to a certain extent, will increase the chances of eczema palms. In addition, the occurrence of eczema on the palms of the hands is also related to neuropsychiatric, chemical products, endocrine metabolic disorders and other reasons. In addition to the palms of the hands, eczema can also occur on the face, forearms, calves and other exposed areas. When the patient checked out the existence of eczema on the palms of the hands, need to actively cooperate with the doctor’s treatment, do a good job of personal protection, so as not to aggravate the condition.