Q-Switched Ruby Laser Therapy of Acquired Bilateral Nevus of Ota-like Macules

Abstract

Q-switched ruby laser is an effective and less invasive tool to eradicate ABNLM.

Combined use of intense pulsed light and Q‐switched ruby laser for complex dyspigmentation among asian patients

“…Although there are reports of treatment responses in melasma to IPLs and lasers, the overall benefit is often limited and of short duration [11]. Hori's macules, or ABNOM, have also been reported to variably respond to different lasers including QSRL [12], Q-switched Nd:YAG [13,14], Q-switched Alexandrite [2] and combination CO2 laser/QSRL [15]. Variability in response between studies, including ours, may be due to several factors.…”

Long-Term Follow-Up of 1,064-nm Picosecond-Domain Neodymium:Yttrium-Aluminum-Garnet Laser Treatment for Acquired Bilateral Nevus of Ota-Like Macules

“…Qswitched lasers, including Q-switched ruby, Nd:YAG, and alexandrite lasers, have also been used for treating AB-NOM. [3][4][5] Despite the similarities between ABNOM and nevus of Ota, the therapeutic outcomes after nanoseconddomain laser treatment thereof are superior in nevus of Ota lesions than in ABNOM lesions; moreover, the risk of developing post-laser treatment hyperpigmentation is higher in ABNOM lesions than in nevus of Ota.…”

“…1 Clinically, ABNOM is characterized by multiple speckled blue-brown and/or slate-gray macules bilaterally on the malar region or less commonly on the forehead, upper eyelids, and nose. [1][2][3] Skin specimens of ABNOM histologically exhibit irregularly shaped, bipolar melanocytes dispersed throughout the papillary and mid dermis, particularly in the subpapillary dermis. 2 Among various treatment modalities for ABNOM, nanosecond-domain lasers have been most widely utilized, and include Q-switched 694-nm ruby, 1,064-nm neodymium:yttrium-aluminum-garnet (Nd:YAG), and 755-nm alexandrite lasers.…”

“…2 Among various treatment modalities for ABNOM, nanosecond-domain lasers have been most widely utilized, and include Q-switched 694-nm ruby, 1,064-nm neodymium:yttrium-aluminum-garnet (Nd:YAG), and 755-nm alexandrite lasers. [2][3][4][5][6] The treatment settings for nanosecond-domain lasers in regards to wavelength, beam size, laser fluence, intervals, and the number of treatment sessions, however, have not yet been optimized. [2][3][4][5][6] Our study group previously evaluated 15 Korean patients with ABNOM who were treated with 1,064-nm Q-switched Nd:YAG laser.…”

“…[2][3][4][5][6] The treatment settings for nanosecond-domain lasers in regards to wavelength, beam size, laser fluence, intervals, and the number of treatment sessions, however, have not yet been optimized. [2][3][4][5][6] Our study group previously evaluated 15 Korean patients with ABNOM who were treated with 1,064-nm Q-switched Nd:YAG laser. 6 Therein, laser treatment was delivered at a fluence of 2.2-2.6 J/cm 2 using a 6-mm spot size on the entire face, followed by an additional pass at a fluence of 4-6 J/cm 2 using a 4-mm spot size on the ABNOM lesions, at 1-2-week intervals.…”