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Acquired bilateral nevus of Ota-like macules (ABNOM) are a common form of hyperpigmentation in Asian populations, characterized by small, bilateral, blue-brown and/or slate-gray patches on the forehead, temples, eyelids, malar areas, and alae and roots of the nose [1]. As reported in other studies, several treatment modalities, including cryotherapy and dermabrasion, have been tried for ABNOM [2,3]. Based on the principles of selective photothermolysis, nevus of Ota has been successfully treated with Q-switched (QS) ruby lasers, QS alexandrite lasers, and QS neodymium-doped yttrium aluminium garnet lasers (QS-Nd:YAG) [4-7]. ABNOM and nevus of Ota, are histologically similar, which suggested to us that laser therapy may also be successful for treating ABNOM. We therefore assessed the efficacy and complications of a fractional QS ruby laser (QSRL) in the treatment of ABNOM. The purpose of this study was to evaluate the efficacy and complications of QSRL in the treatment of ABNOM. Sun Jae Lee, Seung Min Nam, Han Gyu Cha, Eun Soo Park, Yong Bae Kim

The Efficacy of a Q-Switched 694-nm Ruby Fractional Laser for Treating Acquired Bilateral Nevus of Ota-Like Macules