The efficacy and safety of dupilumab, a humanized monoclonal antibody targeting the α subunit of the interleukin (IL)-4 and IL-13 receptors, has been assessed in adults with moderateto-severe atopic dermatitis (AD). 1,2 Injection site reactions, nasopharyngitis, conjunctivitis, and transient increases in eosinophil counts from baseline were higher in the dupilumab groups than in the placebo groups in pivotal studies. 1,2 A recent study by Zhu et al 3 reported new regional dermatoses in 17 patients with AD treated with dupilumab, with facial area involvement in 14 cases, whereas Blauvelt et al 4 reported an equal improvement of AD with dupilumab on different anatomic regions in a post hoc analysis of data extracted from 4 phase 3 clinical trials.