Possible complications include:

• Change in skin pigmentation. Either lighter or blotchy skin, or darkening of the skin, usually caused by exposure to the sun in the days or months following surgery, is possible. Black skin, Asian skin, and other dark complexions are at additional risk for discoloration.
  
  
• Infection and scarring are rare but possible. Excessive scar tissue (keloid or hypertrophic scars) can develop in some individuals. These can be treated with injections or cortisone creams.
  
  
• Recurring fever blisters (herpes simplex).