Treatment of pigmentary disorders in patients with skin of color with a novel 755 nm picosecond, Q‐switched ruby, and Q‐switched Nd:YAG nanosecond lasers: A retrospective photographic review

Abstract

The 755 nm alexandrite picosecond, 694 nm ruby, 532 nm, and 1064 nm neodynium:YAG nanosecond lasers appear to be safe and effective modalities for removal of pigmentary disorders in skin of color patients with no long-term complications if used appropriately. This study demonstrates the potential of the 755 nm alexandrite picosecond laser in further clinical applications beyond tattoo removal. While the Q-switched lasers were effective, promising results were also observed using an early version of the novel picosecond laser for the removal of pigmentary lesions in SOC patients. As we continue to improve our understanding of the 755 nm picosecond laser, this device may prove to be a safe and effective alternative to the Q-switched lasers for the treatment of facial pigmented lesions in patients with skin of color.

Using normal and high pulse coverage with picosecond laser treatment of wrinkles and acne scarring: Long term clinical observations

“…This gives the opportunity for safer and more effective treatment options for darker Fitzpatrick skin types without the significant risks of thermal diffusion to the surrounding tissues and possible post‐inflammatory hyperpigmentation (PIH) that nanosecond pulse durations can produce. There are numerous studies published to support this .…”

Picosecond alexandrite laser for Naevus of Ota treatment in Chinese

“…and Chan et al . reported the successful application of PSAL for the treatment of naevus of Ota . It was observed that fewer treatment sessions were required by PSAL to achieve comparable clinical efficacy compared with Q‐switched lasers .…”

Líquen Plano Pigmentoso com Apresentação Atípica Simulando uma Máscara de Dormir

“…4,8,9 Embora não exista tratamento padrão para o LPP, 10 há relatos de uso de corticóide oral e tópico, tacrolimus tópico de forma isolada ou associado à dapsona, e também de Q--switched (QS) laser. 5,7 O uso de lasers QS são promissores, mas com resultados variados. Em 2015 6 Yates et al, compararam o uso dos lasers QS alexandrita, QS Nd-YAG 1064, e QS KTP no tratamento de lesões perioculares, como nevo de Ota e tatuagem, 11 sendo os melhores resultados alcançados com QS Nd-YAG 1064.…”

“…[2][3][4] A etiologia da doença é indeterminada, havendo relato de possível associação com antígenos que causariam reação liquenóide e também exposição a radiação ultravioleta (RUV) ou agentes fotossensibilizantes. 5,6 Embora alguns estudos tenham apontado para forte correlação entre o vírus da hepatite C e LPP, sobretudo do ponto de vista epidemiológico, esta não foi confirmada por outros autores, necessitando de investigação adicional.…”