The symptoms of acne blackened bumps and hard lumps, one is the normal process of acne regression, one is the acne aggravated into severe acne, producing nodules, cysts or scarring, which belongs to the severe acne, you can cooperate with the doctor to choose the topical medicine, systemic medication, daily care and other ways to alleviate. 1. For larger normal acne, as the inflammation subsides, the original lesions may gradually form dark-colored nodules, which are slower to subside, but are part of the normal process of subsiding, usually pay attention to cleanliness and hygiene, to prevent scratching and infections, and do not need special care. 2. For severe acne, the formation of large nodules, cysts or scarring during the onset of the process, can be manifested as blackened and hardened, the treatment is as follows: Topical medication: Patients can use Adapalene gel, tazarotene gel and other retinoic acid creams, which can improve local keratinization and dissolve microcomedones. Topical benzoyl peroxide medication can also be used, which has the effect of killing Propionibacterium acnes. Systemic medication: patients can choose doxycycline, minocycline and other antibiotic drugs orally, and if necessary, can choose a small dose of prednisone or dexamethasone local injection, so as to control local inflammation and improve the patient’s symptoms. Daily care: patients need to maintain a good state of mind, pay more attention to skin care and cleaning, but also pay attention to a light diet, do not eat spicy stimulating food. It is recommended that after the phenomenon of acne blackened bumps, patients should cooperate with the doctor to choose standardized treatment to improve the patient’s symptoms, and should not blindly use drugs.