Ramsay Hunt syndrome is said to be the cause of 16% of all causes of facial palsies in children, and 18% of facial palsies in adults. It is the presumed cause of as many as 20% of clinically diagnosed cases of Bell palsy. It affects men and women equally. People with a previous chickenpox can potentially develop Ramsay Hunt syndrome. In most cases it affects older adults, especially those over 60. It is treated using corticosteroids (prednisone) and oral antiviral drugs (acyclovir or valacyclovir), although the benefit of antiviral medications is uncertain.