After getting fat-dissolving injections, some people experience a few side effects, but they’re usually temporary. You might feel tingling, burning, or a bit of numbness at the treatment site for a few weeks. It’s also common to see some bruising, swelling, redness, or even tightness in the area, but those typically fade within a few weeks as well. If you’ve had chin treatment, you could feel some soreness in your mouth or throat, and swallowing might feel a little off for a short time. A few people also report mild stomach issues like nausea, diarrhea, or cramping, but those generally go away after a couple of weeks. In rare cases, you might notice a temporary spike in blood pressure, but that usually settles down on its own too.