Old scars from bug bites. How to get rid of them or lighten them? I'm tired of wearing pants (photo)

Thanks for your question and posting pictures.  The dark spot look like you have post-inflammatory hyperpigmentation (PIH).  After a personal consultation, we would probably recommend the PicoSure Laser with the FOCUS and/or Flat Lens for pigment correction.  The FOCUS lens also works well on scar reduction.  PicoSure is safe for all skin types.  Depending on the severity of the pigment, it will probably take 1 to 4 treatments.  Best of luck.