Purpose: To report a case of Horner syndrome that occurred after implantation of a vagus nerve stimulator.
Methods: Case report.
Results: A 6-year-old female with cerebral dysgenesis and intractable partial seizures presented with Horner syndrome after vagus nerve stimulator implantation.
Conclusion: Horner syndrome can occur as a result of the vagus nerve stimulator implant procedure and should be included as one of its possible surgical complications.