The main clinical symptoms are rash, blisters, itching, scaling and redness. Common allergens include environmental pollen, ultraviolet light, and food allergens such as seafood, animal liver, and mangoes and durian. Generally, medication is used, such as topical glucocorticoid ointment, tacrolimus, and glyburide lotion, etc. Patients with combined bacterial infections need to add antibiotic medication; 2. Acne: If red bumps and itching appear on the face, it may also be caused by acne, mainly related to androgen levels and increased sebum secretion, which occurs on the face and neck, chest and back, shoulders and upper arms. Generally choose water or a suitable cleansing product to remove excess oil, flakes and bacterial mixture from the skin surface, and pay attention to oil control and moisturizing. If the symptoms are more serious can be properly applied vitamin A acid ointment, fusidic acid ointment and other topical drugs; 3, folliculitis: usually Staphylococcus aureus infection of the hair follicles on the face led to the hair follicles as the center of the papule, the top can have white pustules, the edge of the red halo, can be accompanied by itching or pain, can use mupirocin or fusidic acid ointment treatment; 4, flat warts: if the red bumps are light red, the top flat, there The itchy but not intense, consider the possibility of flat warts, is infected with human papilloma virus caused. The actual fact is that you can find a lot of people who are not able to get a good deal on a lot of things.