Redness of acne may be due to Malassezia folliculitis, boils, inflammatory acne, etc. It can be treated with topical medication, oral medication, or surgery if it is severe. 1. Malassezia folliculitis: this is a kind of folliculitis, which is an isolated distribution of red pimples, high in chest and back. It can be treated with local ketoconazole cream, ketoconazole lotion, and if the symptoms are serious and the area is large, you can take oral itraconazole, fluconazole and other antifungal drugs. When itching occurs, do not scratch with your hands, reduce strenuous exercise and avoid sweating. 2. Boils: If folliculitis is not treated in time, boils will appear when infection occurs, and they will start as slightly elevated red painful pimples, and the skin will be red, swollen, hot, painful and other symptoms. You can use topical medications, such as mupirocin ointment, ichthyol ointment, etc. If the symptoms are more obvious, you can take amoxicillin and cefuroxime orally at the same time. 3. Inflammatory acne: manifested as dark red nodules or cysts, often accompanied by pain. This condition should be treated with topical benzoyl peroxide, azelaic acid, clindamycin and other drugs to inhibit skin bacteria. If acne is more frequent, oral doxycycline and isotretinoin capsules can be taken to reduce the inflammatory response. Many diseases can cause acne redness, it is recommended to consult a doctor to clarify the diagnosis of targeted treatment, so as not to delay the condition.