Did you have chicken pox when you were young? If so, the virus has lain dormant in your nerve cells and could reawaken at any time to cause a painful condition called shingles. This illness lasts 1-3 weeks and consists of painful blisters and rash. Possible at any age but most likely to affect those age 50 or older, the rash is sometimes followed by severe, prolonged pain that can last months or years.
Until now the only vaccine to prevent shingles has been Zostamax, a live vaccine that offers relatively limited protection. A new vaccine called Shingrix is now available and provides stronger and longer protection. If you have already received the Zostavax immunization and/or had shingles, you are still eligible for vaccination with Shingrix.