What You Need to Know About Postherpetic Neuralgia
What You Need to Know About Postherpetic Neuralgia
The Big Picture
Postherpetic neuralgia (PHN) is a painful condition that can persist long after a shingles outbreak. Understanding its causes and symptoms can help manage this chronic pain.
Contents
- What Causes PHN?
- Who Is at Risk?
- Recognizing the Symptoms
What Causes PHN?
PHN is believed to result from nerve damage caused by the shingles virus, varicella-zoster. The virus can cause inflammation and structural changes in the nerves, leading to ongoing pain even after the shingles rash has healed. This pain is thought to be maintained by changes in nerve activity, rather than by ongoing tissue damage.
Who Is at Risk?
The risk of developing PHN increases significantly with age, particularly in individuals over 60. People who experience severe pain or rash during the initial shingles outbreak are more prone to PHN. Immunosuppressed individuals might also have a higher risk, though evidence is not entirely consistent.
Recognizing the Symptoms
PHN is characterized by a persistent, localized pain that follows the path of the initial shingles rash. This pain can be burning, sharp, or stabbing and is often triggered by light touch, a condition known as allodynia. Sensory deficits, such as numbness or tingling, can also occur in the affected areas.
FAQs
What is PHN?
PHN is long-lasting pain following shingles.
Who is most at risk?
People over 60 and those with severe shingles symptoms.
Can PHN cause other symptoms?
Yes, it can cause allodynia and sensory deficits.
Key Takeaways
Understanding the risk factors and symptoms of PHN is crucial for managing this challenging condition.
Additional References
- Watson CP, Morshead C, Van der Kooy D, et al. Pain 1988; 34:129.
- Bennett GJ. Ann Neurol 1994; 35 Suppl:S38.
This article has been reviewed for accuracy by one of the licensed medical doctors working for Doctronic.