Is it normal/common to get a burn from CoolSculpting? What could cause burn? Will it leave a scar? Does it still freeze the fat?

In my opinion, it is not normal or common to get a burn from a CoolSculpting treatment.  In fact, I have never seen a patient that I treated have a burn from the procedure.  CoolSculpting uses a cooling technology, so theoretically, it should not cause a burn due to heating of the skin.  It is possible to get temporary redness after the treatment, but this is not due to a burn but rather from the cooling of the skin.  

A burn from Coolsculpting is not typical. Some redness and swelling can be typical. If you have a burn, I recommend following up with your practitioner for aftercare. To speed up healing, you can try adding hyperbaric oxygen, lymphatic massage, venus legacy or exilis radiofrequency treatments.  Keep in mind, for best results, a combination approach is needed and some people need more than one treatment with Coolsculpting. I recommend adding radiofrequency treatments like Vanquish for skin tightening and with Z wave/Cellutone for skin smoothing. However, a Vaser with ThermiRF procedure is the best combination for a toned result, but requires more downtime. See an expert. Best, Dr. Emer

Coolsculpting is a fabulous procedure and we have amazing results with no down time or side effects.  A burn is definitely not the norm and you should consult your treating physician for the proper treatment.  Please consult an expert in Coolsculpting for the best cosmetic results.  Best, Dr. Green