title: Treatment of Postinflammatory Pigmentation Due to Acne with Q-Switched Neodymium-Doped Yttrium Aluminum Garnet In 78 Indian Cases.
abstract: BACKGROUND
  Postinflammatory hyperpigmentation (PIH) is a common sequela seen in the Indian population following affliction by acne. It is psychologically extremely disturbing for the patients and can severely affect the quality of life. Very few therapeutic modalities have proved to be really efficacious in this condition.
  
  
  OBJECTIVE
  The aim was to review our experience with 1,064-nm Q-switched neodymium-doped yttrium aluminum garnet (QSNY) laser in the treatment of PIH.
  
  
  METHODS
  Seventy-eight patients with postacne hyperpigmentation were included in the study. They were treated with six sessions at two weekly intervals using a 1,064-nm QSNY laser. Patient and physician scores were assessed at 1 month and 3 months after the last treatment. Clinical photographs also were reviewed to determine the efficacy. Adverse effects were noted.
  
  
  RESULTS
  Seventy percent of the patients reported significant improvement in hyperpigmentation as compared to the baseline. The majority of the adverse events were limited to mild, brief erythema.
  
  
  CONCLUSIONS
  The 1,064-nm QSNY laser is an effective modality for the treatment of PIH caused by acne.
authors: Department of Dermatology, Skin Diseases Centre, Nashik, Maharashtra, India.
authors: Vijay P
authors: VP
authors: Zawar
authors: Department of Dermatology, Skin and Aesthetic Clinic, Mumbai, Maharashtra, India.
authors: Madhuri
authors: M
authors: Agarwal
authors: Department of Dermatology and STD, INHS Ashwini, Mumbai, Maharashtra, India.
authors: Biju
authors: B
authors: Vasudevan
keywords: Acne; Q-switched neodymium-doped yttrium aluminum garnet (QSNY) laser; hyperpigmentation