Low-fluence 585 nm Q-switched Nd:YAG laser: A novel laser treatment for post-acne erythema

Background Persistent post‐acne erythema is one of the most common aesthetic sequelae to arise after active acne resolves. The treatment remains challenging due to lack of effective laser modalities. Objectives To evaluate the safety and efficacy of a low‐fluence 585 nm Q‐switched Nd:YAG laser for t...

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Bibliographic Details
Published in:Lasers in surgery and medicine 2015-02, Vol.47 (2), p.148-155
Main Authors: Panchaprateep, Ratchathorn, Munavalli, Girish
Format: Article
Language:English
Subjects:
585nm Q-Switched Nd:YAG Laser
Acne
Acne Vulgaris - complications
Acne Vulgaris - pathology
Acne Vulgaris - therapy
Adolescent
Adult
Erythema - etiology
Erythema - pathology
Erythema - radiotherapy
Female
Follow-Up Studies
Humans
Lasers, Solid-State - therapeutic use
Low-Level Light Therapy - instrumentation
Male
Patient Satisfaction
Post-acne erythema
Prospective Studies
Treatment Outcome
Young Adult
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Summary:Background Persistent post‐acne erythema is one of the most common aesthetic sequelae to arise after active acne resolves. The treatment remains challenging due to lack of effective laser modalities. Objectives To evaluate the safety and efficacy of a low‐fluence 585 nm Q‐switched Nd:YAG laser for the treatment of post‐acne erythema. Materials & Methods Twenty‐five patients with post‐acne erythema were treated with a low‐fluence Q‐switched Nd:YAG laser using the 585 nm Gold Toning™ handpiece (5 mm spot size, 5–10 ns, 0.30–0.55 J/cm2, 2–4 passes) for three sessions at 2‐week intervals. Erythema lesion (macules) count, inflammatory acne (papules, pustules) count, erythema index, degree of post‐acne erythema and overall improvement in post‐acne erythema and acne scar were assessed at baseline, every 2 weeks and 6 weeks after the last treatment. Subjective degrees of satisfaction were also evaluated. Adverse events were recorded and pain was scored using a visual analog scale (VAS). Results At 6 weeks after 3 sessions of laser treatment, all patients demonstrated clinical improvement. Erythema lesion counts decreased by 20.1% (versus baseline) after the first treatment (P = 0.004), by 32.7% after the second treatment, by 46.5% at 2 weeks after the third treatment and by 58.7% at the 6‐week follow‐up (all P 
ISSN:0196-8092
1096-9101
DOI:10.1002/lsm.22321