Treatment of exogenous hyperpigmentary disorders following silver ion-related chemical exposure with 1,064nm Q-switched laser: a 10-year follow-up

1,064 nm Q-switched laser has been commonly used to treat pigmentation. However, there is still a lack of research on the treatment of hyperpigmentation caused by topical exposure to metallic salts-related chemical oxidation. We reported an Asian female patient who developed pigmentation 1 year on the face and neck after the recovery from a chemical explosion injury. 1,064 nm Q-switched laser were utilized to treat for 10 years. The facial pigment improved obviously after 10 sessions of treatment of 1,064 nm Q-switched laser. No recurrence or adverse events occurred during 10 years of treatment and follow-up, while the progression of lesions on the neck was observed.