Abstract: 【Abstract】 Objective To analyze postoperative adverse reactions after the treatment of acne scars with punch elevation. Methods Totally, 27 patients with moderate or severe acne scars, who were treated with punch elevation, were collected from the Department of Dermatology, Xijing Hospital, Air Force Medical University from June 2020 to March 2021. The patients received local infiltration anesthesia during the operation, and were cared for with tensile adhesive plaster bandaging, cold compresses, and waterproofing after the operation; telephone and face-to-face follow-up visits were conducted immediately, 3, 7, 14, 21, 30, and 60 days after the operation, and numerical rating scale （NRS） of intraoperative pain, postoperative swelling duration, postoperative erythema duration, and the incidence of post-inflammatory hyperpigmentation were recorded. Results Among the 27 patients, the severity score of acne scars was 77.76 ± 43.76 points. The intraoperative pain NRS score was 3.75 ± 2.95 points after local infiltration anesthesia, the postoperative swelling lasted 3.42 ± 2.43 days, postoperative erythema lasted 4.74 ± 3.25 weeks, and the duration of postoperative erythema was not significantly correlated with the severity score of acne scars （r2 = 0.018，P = 0.449）. After the operation, post-inflammatory hyperpigmentation occurred in 2 patients, and no local infections or fulminant acne was observed. The patient satisfaction rate was 100% （27/27）. Conclusion The main adverse reactions after punch elevation for acne scars were postoperative swelling and erythema, which subsided spontaneously about 1 month after the operation.

Key words: Cicatrix, Acne vulgaris, Therapy, Punch elevation, Adverse reactions