Can excessive Vaser cause/trigger widespread inflammatory response/arthritis across body post-op?

There are no known or reported side effects of having liposuction weather ultrasound Assistance is used or not.
Whether your surgery was done to your liking or not, it is unlikely to be the cause of chronic pain or systemic illness. These are most likely not related. I suggest getting an appropriate evaluation starting with your primary care doctor if you have not done so already.
Best,
Mats Hagstrom, MD