Ramsay Hunt syndrome (also termed Hunt's Syndrome and herpes zoster oticus) is a rare neurological disorder characterized by paralysis of the facial nerve (facial palsy) and a rash affecting the ear or mouth caused by herpes zoster virus infection of the geniculate ganglion of the facial nerve caused by reactivation of herpes zoster virus that has previously caused chickenpox in the patient. In addition to the painful shingles rash, Ramsay Hunt syndrome can cause facial paralysis and hearing loss in the affected ear. It affects men and women equally. People with a previous chickenpox can potentially develop Ramsay Hunt syndrome. However, most cases affect older adults, especially those over 60.