The Facts

• According to the National Institute of Neurological Disorders and Stroke, shingles--also called herpes zoster--is a painful secondary manifestation of the virus that causes chicken pox (varicella zoster). It occurs when the dormant virus reactivates and spreads along the nerves to the skin.
  
  

Postherpetic Neuralgia

• Postherpetic neuralgia is a complication of shingles that can linger for months or years in the areas affected by a shingles outbreak. It is triggered by nerve damage that results from reactivation of varicella zoster.
  
  

Postherpetic Itching

• Postherpetic itching is a symptom of postherpetic neuralgia, and most typically arises in skin that has experienced severe nerve loss.
  
  

Treatment

• Postherpetic itching may be more difficult to treat than other symptoms of postherpetic neuralgia. Local anesthetics applied to the skin sometimes provide relief.
  
  

Considerations

• Individuals with postherpetic itching should avoid scratching their affected skin, since lack of sensation can lead to unanticipated injury.