Facial allergies with dense small bumps to consider is allergic dermatitis, mainly to take oral and topical medication treatment method. Allergic dermatitis is a large group of diseases that are related to allergies and cause itchy skin, pimples and other symptoms are called allergic dermatitis, including acute urticaria, eczema, atopic dermatitis, contact dermatitis and so on. Allergic dermatitis needs to try to find the allergens, get rid of the allergens, and avoid re-exposure. Treatment can be oral antihistamines (such as loratadine tablets, cetirizine hydrochloride, etc.), or topical mometasone furoate ointment, hydrocortisone butyrate ointment and other glucocorticoid drugs, or calcium-modulated neural phosphatase inhibitors such as tacrolimus and pimecrolimus. It is recommended that patients consult a doctor in a timely manner to choose the appropriate medication according to the actual condition, do not blindly self-medication.