Chronic dermatitis has not been healed to consider the following situations: 1, not after a sufficient amount, a full course of regular treatment, dermatitis needs anti-allergy treatment, you can take oral Epinastine hydrochloride capsules, Lupatadine fumarate tablets, topical medication can be chosen glycerine lotion, halomethasone cream coating. The treatment course of chronic dermatitis needs at least half a month, if the above standard is not reached as well as the above course of treatment may lead to recurrent dermatitis. 2, dermatitis is mostly due to allergic factors, may be long-term contact with dust mites, dust mites, dust, animal dander and inhalation allergy, or long-term, large amount of consumption of foreign proteins and allergies caused by. If long-term contact, inhalation or allergy to food, may lead to the recurrence of dermatitis.