ENT Etiology Vascular congestion with secondary ischemia to the nerve u Vasospasm would lead to ischemia, nerve edema, and secondary compression within the fallopian canal Viral polycranioneuropathy Herpes simplex virus and herpes zoster virusEtiology ◼ Vascular congestion with secondary ischemia to the nerve ◼ Vasospasm would lead to ischemia, nerve edema, and secondary compression within the fallopian canal. ◼ Viral polycranioneuropathy ◼ Herpes simplex virus and herpes zoster virus