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What Is the Reason for Postherpetic Neuralgia Itch?

Postherpetic neuralgia is a painful nerve condition that sometimes rises in the aftermath of a disorder called shingles. Along with pain and other symptoms, postherpetic neuralgia can trigger intense or painful itching.

  1. 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.

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