Synkinesis can occur after experiencing facial paralysis, Bell’s Palsy, or facial nerve injury. As the facial nerve regrows, the nerves can rewire improperly, causing unwanted movements and uncoordinated facial expressions. For example, smiling might unintentionally cause your eye to close, or you may experience facial spasms or tightness. This imbalance—which Dr. Joseph Dayan describes as a "partly paralyzed, partly hyperfunctioning face"—can leave you feeling frustrated and self-conscious.
The likelihood of developing synkinesis after nerve surgery varies, but it is more common in cases where nerve damage is severe or recovery is delayed. Conditions such as Bell’s Palsy significantly increase the risk, with up to 30% of adults with this condition experiencing synkinesis.