Hard acne is mostly caused by severe localized inflammation of the hair follicles, which can generally be dealt with by medication with needle clearing. 1. Medication: hard pimples are generally nodular acne, caused by severe local inflammation, with redness, swelling and pain, can be applied antibiotic drugs, such as fusidic acid ointment, as well as to promote exfoliation of drugs, such as adapalene gel, etc., and at the same time can be orally taken isotretinoin soft capsule and other medications. 2. Needle clearing: After treatment with medication, the outer skin layer of acne becomes thin, and can be treated with needle clearing under the operation of a doctor to clean out the oil, dander and other blockages that block the pores in order to promote the acne to subside. It is recommended that patients consult the hospital in time, under the guidance of the doctor for treatment, without self-medication and operation.