Silver Book Fact
Nearly 1 million Americans develop shingles each year and 10% to 15% of sufferers develop postherpetic neuralgia (PHN)–shingles associated pain that lasts for more than 3 months.
Shingles Sends Nearly 1 Million Americans to the Doctor. http://archive.ahrq.gov/news/nn/nn010908.htm. Published January 9 2008