The most common clinical condition that can occur is atopic dermatitis of the face, which is a sudden growth of many small red dots on the face. The causes of this allergic dermatitis are generally complex, the most common being sun allergy, such as the most common sun dermatitis, or cosmetic dermatitis as a result of contact with allergic cosmetics, or, of course, the ingestion of allergic foods, resulting in facial allergy. It is also possible that there is a certain inflammatory reaction in the area, especially if the infection is secondary to inflammation, the most common of which is acne. In addition, there may also be a bleeding reaction on the face, the most common may be purpura, and purpura appears on the face, usually may be manifested in the pressure purpura around the eyes, this pressure purpura some people may be due to vomiting, or loud crying, so cause local subcutaneous capillary part of the bleeding, so the formation of local purpura-like reaction.