If you had chickenpox as a kid, you'll likely get shingles as you get older, immune suppressed, or are under stress.

Your risk of shingles and post-herpetic neuralgia (PHN) increases as you get older. CDC recommends that people 60 years old and older get shingles vaccine to prevent shingles and PHN.

Shingles vaccine has been used since 2006. Zostavax® is the only shingles vaccine currently approved for use in the United States. This vaccine reduces the risk of developing shingles by 51% and PHN by 67%. It is given in one dose as a shot, and can be given in a doctor’s office or pharmacy. Protection from shingles vaccine lasts about 5 years, so adults vaccinated before they are 60 years old might not be protected later in life when the risk for shingles and its complications are greatest.

得了带状疱疹(shingle)，If you've had shingles once, you probably won't get it again. That doesn't mean it can't happen, it's just unlikely. 疫苗可维持5年。60岁以上都建议打。

Postherpetic neuralgia (PHN) is persistent pain that lasts months or even years after the shingles rash heals. Certain medicines, such as anticonvulsants, antidepressants, and opioids, can relieve pain. Most cases of PHN resolve within a year. 治疗神经疼的药主要有， Gabapentin, Pregabalin (Lyrica).