Indian Journal of Dermatology
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Year : 2016  |  Volume : 61  |  Issue : 3  |  Page : 347

A retrospective study on the characteristics of treating nevus of ota by 1064-nm q-switched neodymium-doped yttrium aluminum garnet laser

Department of Dermatology, Northwest Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi, PR China

Correspondence Address:
Prof. Songmei Geng
Department of Dermatology, Northwest Hospital, Xi'an Jiaotong University, 157 Xi Wu Road, Xi'an, Shaanxi 710004
PR China
Prof. Weihui Zeng
Department of Dermatology, Northwest Hospital, Xi'an Jiaotong University, 157 Xi Wu Road, Xi'an, Shaanxi 710004
PR China
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0019-5154.182470

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Background: The Q-switched neodymium-doped yttrium aluminum garnet (QS Nd:YAG) laser has a significant effect in treating nevus of Ota, but there is lack of a retrospective study about the characteristics of efficacy. Aims and Objectives: To retrospectively analyze the correlation between the clinical characteristics and efficacy, complications, recurrence of QS Nd:YAG laser in treating nevus of Ota. Materials and Methods: One hundred and seventy-one Chinese patients (144 female, 27 male) of nevus of Ota were treated with the 1064-nm QS Nd:YAG laser. All cases were treated with fluencies of 4–8 J/cm2 and a spot size of 2–4 mm. Clinical photographs were taken before every treatment and patients were followed up by their clinicians. Results: One hundred and forty-five patients (84.8%) acquired more than 75% improvement with an average of 4.6 sessions. The treatment effect has no significant correlation with sex (P > 0.05). The blue-black and brown lesions improved more than the light-brown (P < 0.05). Hyperpigmentation affected two (1.2%) of the patients and hypopigmentation affected one patient (0.6%). No other adverse effect was observed. Recurrence was seen in two patients (1.2%). Conclusion: The 1064-nm QS Nd:YAG laser is effective with rare complications and recurrence in the treatment of nevus of Ota. The efficacy correlated with lesion color, which is meaningful to estimate the prognosis.

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