“When you experience burning pain, think of shingles.”

Justin Bieber had them. Herbert Prohaska and Martina Rupp too. Shingles affects a third of the population during their lifetime. While the viral disease is harmless and even almost symptomless in some people, up to 30 percent of patients experience drastic health problems: The most common complication is the extremely painful post-herpetic neuralgia (PZN), which results from nerve damage.