When acne has the symptom of localized skin redness and obvious swelling, it may be caused by skin infection. You can reduce the inflammatory reaction by applying antibacterial ointment, local cleansing and dietary care, so as to improve the symptom of localized redness and swelling. 1. topical antibiotics: you can apply clindamycin and benzoyl peroxide on the affected area to kill the infected bacteria and promote the local inflammation to subside. 2. local cleanliness: pay attention to local hygiene, do not squeeze, to avoid inflammation and infection aggravation, but also need to use water to clean the face of excess oil, pay attention to local moisturizing. 3. diet: eat less spicy stimulating food, eat more fresh vegetables and fruits, reduce inflammation stimulation, conducive to the recovery of acne. When the acne localized symptoms of redness, swelling and pain, you need to seek medical treatment in time to prevent the infection from aggravating and affecting the patient’s normal life.