It is recommended to use topical anti-infection fusidic acid or Bactroban cream, generally fusidic acid cream is more permeable and can be used topically once in the morning and once in the evening. When shampooing, you can try topical ketoconazole lotion or selenium disulfide lotion, which can effectively reduce sebum secretion, inhibit fungal growth, and reduce acne on the scalp. You should also pay attention to avoid eating spicy and stimulating foods, and those with more severe rashes can be given oral vincristine or oral isotretinoin. For cystic acne, glucocorticoids can sometimes be given, and must be used under the guidance of a doctor.