Can pulsed dye laser treatment cause a new scar to appear if it is applied to a previously healthy area accidentally? (photos)

I had 2 pulsed-dye laser treatments for surgical scars on my knee from a ACL reconstruction 5 months prior. About 5 hours after the second treatment, I noticed a new small spot that looks, acts (it turns purple in cold or water), and feels (I can feel what seems like nothing other than scar tissue under it, and it itches at times) just like a scar. Could the treatment have caused this? Perhaps the doctor inadvertently applied the laser the wrong spot?

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