Temporary Infraorbital Nerve Sensory Disturbance Following Perioral Injection of a Soft Tissue Filler

The use of soft tissue fillers has increased in the last 2 decades. Certain risks accompany the use of soft tissue fillers, including short-term or long-term complications that may be related to injection technique, anatomic location, patient characteristics, or the filler material itself. We present a rare case of facial numbness in the distribution of the infraorbital nerve following hyaluronic acid (HA) filler injections to correct downturned lateral lip corners.