Ptosis With Aberrant Facial Nerve Regeneration Following Bell Palsy.

Abstract

Bell palsy is the most common lesion affecting the facial nerve. Aberrant facial nerve regeneration following facial nerve palsy may cause facial nerve synkinesis and ptosis. The authors present a 65-year-old male who suffered from left peripheral facial nerve palsy in 2017. During the recovery period, he had moderate ptosis in primary gaze, and he also noted left upper eyelid closure when he tried to blow something or puff his cheeks. Neurologic examination was normal except for the synkinetic movements as described above. Surgery was planned with an attempt to resect a part of the orbicularis oculi muscle (OOM) to decrease the synkinetic eyelid closure. In addition, the levator muscle was advanced for treatment of the ptosis. Before surgery, an electromyography study by a neurologist showed normal activity of the OOM but failed to demonstrate the relationship between this muscle and other muscles due to technique failure. However, after surgery electromyography studies of the facial and orbicularis oris muscle suggested that cheek puffing produced contraction in the OOM. During follow-up time, the patient was satisfied with the surgical results. To the best of our knowledge, this is the first report to describe ptosis with aberrant facial synkinesis during cheek puffing was treated with surgery.