Is a painful skin rash that typically develops on one side of the face or body. Zostavax was approved by the FDA in 2006 for the treatment of shingles for people over the age of 50. This vaccination reduced the risk by 51%. The rash consists of blisters that typically scab over in 7 to 10 days and clears up within 2 to 4 weeks. Some people describe the pain as an intense burning sensation. For some people, the pain can last for months or even years after the rash goes away. This is why it is important you receive shingles vaccines!