What are the most common complications of plastic surgery?

Most common: Although it depends on what type of surgery you are interested in most common complications are fairly universal. Risk of anesthesia, hematoma, seroma, poor healing or tissue loss (especially in smokers or obese patients), infection risks are usually small, unfavorable scarring, asymmetry, changes in sensation, need for further surgery.

Surgery complication: Surgical complications are specific to the type of procedure. For instance, liposuction complications include contour irregularities and asymmetry. In general, though, surgical complications are well within acceptable ranges. I recommend you seek consultation with a board-certified plastic surgeon for the safest, best outcomes.