Two different forms of mumps-associated facial palsy

Peripheral facial nerve paralysis is relatively common in the pediatric age group. Infectious agents convincingly associated with acute facial palsy include varicella-zoster virus, herpes simplex virus, cytomegalovirus, Epstein–Barr virus, rubella virus, and more recently, human immunodeficiency virus. However, facial palsy has rarely been documented in patients with mumps virus infection. Facial palsy caused by mumps infection is believed to exist in two distinct forms, one representing an initial infection with mumps parotitis and another representing a reinfection without parotitis. We recently saw the two different forms of mumps-associated facial palsy with and without parotitis.