Comparison of a picosecond alexandrite laser versus a Q-switched alexandrite laser for the treatment of nevus of Ota: A randomized, split-lesion, controlled trial.

Abstract:

BACKGROUND:Novel picosecond lasers have been available for various pigmentary disorders. However, there are limited data directly comparing picosecond lasers and Q-switched lasers for treatment of nevus of Ota. OBJECTIVE:To compare the efficacy and safety of a picosecond alexandrite laser (PSAL) with a Q-switched alexandrite laser (QSAL) for the treatment of nevus of Ota. METHODS:Each lesion of 56 enrolled participants was split into 2 parts and randomly assigned to either the PSAL or QSAL treatment arm. Each lesion was treated in up to 6 sessions in 12-week intervals. Efficacy and safety were determined using blinded visual evaluation and self-report at each follow-up visit. RESULTS:The PSAL arm achieved a significantly better clearance (5-point scale, PSAL 4.53 vs QSAL 4.0) with fewer sessions (PSAL 5.26 vs QSAL 5.87) and less severe pain (Visual Analog Scale, PSAL 5.61 vs QSAL 6.40). Patients were more satisfied with PSAL than QSAL (Likert scale, 4.5 vs 4.0). Occurrences of postinflammatory hyperpigmentation (PSAL 26% vs QSAL 34%) and hypopigmentation (PSAL 21% vs QSAL 47%) were also lower in PSAL than QSAL arm. LIMITATIONS:Lack of objective assessments and outcome measures. CONCLUSION:PSAL demonstrated better clinical results and fewer adverse events than QSAL for the treatment of nevus of Ota.

journal_name

J Am Acad Dermatol

authors

Ge Y,Yang Y,Guo L,Zhang M,Wu Q,Zeng R,Rong H,Jia G,Shi H,Fang J,Lin T

doi

10.1016/j.jaad.2019.03.016

subject

Has Abstract

pub_date

2020-08-01 00:00:00

pages

397-403

issue

2

eissn

0190-9622

issn

1097-6787

pii

S0190-9622(19)30430-X

journal_volume

83

pub_type

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