Ann Dermatol.  2017 Aug;29(4):427-432. 10.5021/ad.2017.29.4.427.

Beneficial Effect of Low Fluence 1,064 nm Q-Switched Neodymium:Yttrium-Aluminum-Garnet Laser in the Treatment of Senile Lentigo

• Nam JH
• Kim HS
• Lee GY
• Kim WS

• KMID: 2388940
• DOI: http://doi.org/10.5021/ad.2017.29.4.427

Abstract

BACKGROUND
Low fluence 1,064 nm Q-switched (QS) Neodymium:Yttrium-Aluminum-Garnet (Nd:YAG) laser treatment, also known as laser toning, is widely used for pigmentary disorders. There has been no reliable evaluation of the effect of low fluence 1,064 nm QS Nd:YAG laser for senile lentigo.
OBJECTIVE
To investigate the beneficial effect of low fluence 1,064 nm QS Nd:YAG laser in the treatment of senile lentigo on the face.
METHODS
A retrospective review was conducted on patients treated only with repetitive low fluence 1,064 nm QS Nd:YAG laser. Among them, 12 patients with multiple senile lentigines before treatment were included. All side effects were recorded to assess the safety of the modality.
RESULTS
Mean age was 56.1±7.8 years old and male-to-female ratio was 1:11. Mean treatment fluence was 1.62±0.16 J/cm² and mean total treatment session was 8.8±2.6. Mean interval period between each session was 28.0±11.4 days and mean treatment session to reach marked and near total improvement was 8.7±2.8. At the final visit, seven of 12 (58.3%) patients reached marked and near total improvement, and three of 12 (25.0%) reached moderate improvement. No side effects occurred.
CONCLUSION
Repetitive low fluence 1,064 nm QS Nd:YAG laser treatment may be an effective and safe optional modality for senile lentigo.

Keyword

Lasers; Laser therapy; Lentigo; Pigmentation; Skin

MeSH Terms

Humans
Laser Therapy
Lentigo*
Pigmentation
Retrospective Studies
Skin

Figure

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  Fig. 1 Clinical improvement at the final visit (n=12).

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  Fig. 2 Clinical images of near total improvement cases. (A) No. 3 patient before treatment (left) and at 7-month visit after 9 sessions of Neodymium:Yttrium-Aluminum-Garnet laser treatment (right), (B) No. 10 patient before treatment (left) and at 5-month visit after 10 sessions of laser treatment (right), and (C) No. 12 patient before treatment (left) and at 14-month visit after 12 sessions of laser treatment (right).

• 

  Fig. 3 Clinical image of marked improvement case (No. 7 patient) (A) before treatment and (B) at 5-month visit after 9 sessions of Neodymium:Yttrium-Aluminum-Garnet laser treatment on the face.

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