Is Numbness a Side Effect of Ultherapy?

The ultrasound can hit a small sensory nerve temporarily disrupting it's function - these are relatively uncommon and have resolved over the time of a few days to weeks in the cases I've heard about. As in surgery, nerves that get pulled or injured with electrocautery usually recover over a few weeks and at times longer (months). In the same manner, sensory nerves thought to trigger the onset of migraines can as well be irritated during treatment possibly causing the potential onset of a headache. Migraine patients should bring their meds just in case to their treatment.

Numbness following Ultherapy treatment is not unusual. The symptoms that you are experiencing are not from the nerve block, since this will typically resolve in a few hours. It is not uncommon following Ulthera to experience some temporary numbness or tingling. In my practice, we have not had any patients that have any permanent numbness I have had the procedure twice, and both time had more tingling than numbness. With nerve blocks, there is always the possibility of nerve injury, which is uncommon. If your numbness persists more than 7-10 days, you should see the physician where your procedure was performed. Good luck.

There is possibly a side effect of numbness following an Ulthera procedure, however the percentage is very low.  If this was a side effect from Ulthera for you, the effects should subside before 3 weeks.