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Patients undergoing vulvar biopsy often report that preliminary injection of local anesthetic is the most painful part of this common gynecologic procedure. In a single-site U.S. trial, investigators randomized women with planned vulvar biopsy of a non–hair-bearing surface to topical lidocaine-prilocaine cream (EMLA) left in place for ≥10 minutes prior to biopsy or conventional injection of 1% lidocaine ≥1 minute before biopsy. The clinician could inject additional lidocaine regardless of treatment arm if deemed appropriate. Pain was participant-reported on a scale from 0 mm (no pain) to 100 mm (worst imaginable pain).
Among 37 participants (median age, 60; 57% white, 44% black), median pain scores at biopsy were 6.0 (lidocaine-prilocaine cr…