Two sessions six weeks apart on my abdomen - never again

I had two sessions six weeks apart on my abdomen. The first treatment went fairly well with some bruising and lots of tenderness. The procedure is not comfortable but was tolerable. I went in for my second treatment and was doing the abdomen and flanks. The abdomen procedure was much like the first treatment. I then moved onto the flanks and it was a nightmare. The heat was so intense I told them I thought we might need to stop. She said we just started and it would cool down shortly. I waited another minute and told her the heat was so bad I thought I would pass out. We removed my shirt and ran a fan to help make me feel cooler. It did nothing and I explained three times I felt like passing out. I said we need to stop and next thing I remember is coming to and being told I had passed out. The doctor came in and explained it was too much and I needed to do one side at a time. He gave me the name for what happened but I can’t remember it. Scared me to death and obviously it’s not anything I wish to experience again. Please proceed with caution.