Scar made worse immediately after VBeam, is this a normal side-effect for scars and will it improve?

I have a small recent hypertrophic scar on my nose, which was healing fine but remained slightly red and very slightly raised. I went to a dermatologist today who suggested VBeam and performed a few zaps using a non-purpuric module, so wasn't too intense and did not hurt. However, my scar instantly swelled up and became more raised and red right after, this has continued for 6 hours, I'm scared it won't improve. If I put pressure on the scar it remains flat for a while before raising again.