Allergy on the face flow of yellow water for yellow tissue exudate, is by blood cells plus white blood cells of the product, cause this symptom of allergic diseases are common acute eczema and atopic dermatitis. 1. Acute eczema: acute eczema can appear in any part of the body skin, to the head and face is the most common, the typical skin damage manifested as dense corn grain-sized papules and small blisters, scratching can appear vesicles, there is a plasma oozing, usually yellowish, that is, the yellow water of the naked eye. 2. Allergic dermatitis: allergic dermatitis is the skin in contact with certain exogenous substances, in the skin and mucous membrane contact parts of the inflammatory reaction, when the facial dermatitis develops to a more serious stage will lead to skin vesicles, liquid exudate, exudate is often manifested as a yellowish slurry. When patients with such symptoms, you need to go to the hospital in a timely manner, follow the doctor’s instructions to use drugs such as glycerine lotion or boric acid solution for wet compresses, oral anti-allergy drugs such as loratadine and other treatment.