title: Pigmentary changes after alexandrite laser hair removal.
abstract: BACKGROUND
  Postinflammatory pigmentary changes are a frequently encountered problem with numerous dermatologic procedures. Limited literature is available that documents this complication with laser hair removal.
  
  
  OBJECTIVE
  It is important for all physicians performing laser hair removal to be aware of this potential complication. We present our experience with postinflammatory pigmentary change and discuss some potential etiologic factors.
  
  
  METHODS
  Seven patients who experienced postinflammatory complications after alexandrite laser hair removal are presented. These are all the patients who developed this complication in our office over the past 2.5 years.
  
  
  RESULTS
  The patients who we describe in this article all developed a similar pattern of initial hyperpigmented rings, later developing into a thin wafer-like crust followed by hypopigmentation with gradual return to their normal skin color.
  
  
  CONCLUSIONS
  In general, the alexandrite laser is both safe and effective for hair removal in patients of varying skin types. Complication rates will increase as skin pigment increases and as the power used increases. However, even in light-skinned individuals without recent pretreatment or posttreatment sun exposure, with proper treatment parameters, complications, and side effects can arise. We have found this to be especially true when treating areas other than the face.
authors.affiliation: Skin and Laser Surgery Center of Pennsylvania, Philadelphia, Pennsylvania 19102, USA.
authors.forename: Noah Kawika
authors.initials: NK
authors.lastname: Weisberg
authors.forename: Steven S
authors.initials: SS
authors.lastname: Greenbaum
mesh_terms: D000293:Adolescent; D000328:Adult; D005260:Female; D006204:Hair Removal / Q000009:adverse effects* / Q000379:methods; D006801:Humans; D007834:Lasers / Q000009:adverse effects*; D008875:Middle Aged; D010859:Pigmentation Disorders / Q000209:etiology*; D012880:Skin Pigmentation