Journal
JOURNAL OF DERMATOLOGICAL TREATMENT
Volume 34, Issue 1, Pages -Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/09546634.2023.2255057
Keywords
Dermal melanocytosis; ectopic mongolian spot; Q-switched Nd:YAG laser; treatment
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The present study aimed to investigate the efficacy of high-fluence 1064 nm Q-switched Nd:YAG laser in treating ectopic Mongolian spots. The results showed that this laser treatment had significant effects on improving the color and melanin content of the spots, and it was well-tolerated.
Q-switched neodymium-yttrium aluminum-garnet (Q-switched Nd:YAG) laser has been reported as an effective treatment for nevus of Ota and acquired bilateral nevus of Ota-like macules (ABNOM). Data on ectopic Mongolian spots have rarely been reported.The present study was performed to investigate the treatment efficacy of a high-fluence 1064 nm Q-switched Nd:YAG laser without tissue whitening in ectopic Mongolian spots.We included 61 patients with ectopic Mongolian spots, and 70 lesions were examined. Thirty-three lesions were treated with a high-fluence 1064 nm Q-switched Nd:YAG laser, and 38 lesions were observed without treatment. The results were assessed using a 5-quantile grading scale and melanin index using a Mexameter (R).Mean follow-up duration was 14.1 +/- 6.8 months for the treatment group and 17.8 +/- 10.0 months for the observation group. Mean 5-quintile grading scale at final follow-up was statistically different (p < 0.001) between the two groups (treatment: 2.85 +/- 1.00, observation: 0.49 +/- 0.73). There was a significant difference (p < 0.001) in the Delta melanin index (initial melanin index - final melanin index) between the observation (7.1 +/- 62.7) and treatment (156.7 +/- 78.4) groups.High-fluence Q-switched Nd:YAG laser without tissue whitening showed good results and was well-tolerated in treating ectopic Mongolian spots.
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