Postherpetic Neuralgia
What is Postherpetic Neuralgia?
Postherpetic neuralgia is a type of nerve pain that continues long after a shingles infection has healed. It happens when damaged nerve fibers send exaggerated pain signals to your brain. The condition can last for months or even years after the shingles rash disappears.
Shingles is caused by the varicella zoster virus, the same virus that causes chickenpox. After you recover from chickenpox, the virus stays dormant in your nervous system. When it reactivates later in life, it causes shingles. In some people, the nerve damage from shingles leads to persistent pain.
This condition affects about 10 to 18 percent of people who get shingles. The risk increases with age, especially in people over 60. The pain can range from mild to severe and may interfere with daily activities and sleep.
Symptoms
- Burning, sharp, or stabbing pain in the area where shingles occurred
- Sensitivity to light touch, even from clothing or bedsheets
- Itching or numbness in the affected area
- Pain that persists for 3 months or longer after the rash heals
- Shooting or electric shock sensations
- Muscle weakness in some cases
- Headaches if the pain affects the face or scalp
The pain usually affects the same area where the shingles rash appeared. It most commonly occurs on one side of the torso but can affect other areas.
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Causes and risk factors
Postherpetic neuralgia develops when nerve fibers are damaged during a shingles outbreak. The damaged nerves become confused and send ongoing pain signals to the brain. Scar tissue may form around the nerves, putting pressure on them and causing continued pain.
Risk factors include being over 60 years old, having severe shingles pain during the infection, and having a weakened immune system. People who had a severe shingles rash or who delayed treatment are more likely to develop this complication. Women appear to have a slightly higher risk than men.
How it's diagnosed
Doctors diagnose postherpetic neuralgia based on your medical history and symptoms. They will ask about previous shingles infection and when your pain started. A physical exam helps identify the location and type of pain you are experiencing.
Blood tests can confirm past varicella zoster virus infection by detecting antibodies in your blood. Talk to your doctor about testing options to understand your history with this virus. The diagnosis is typically made when pain continues for 3 months or more after the shingles rash has healed.
Treatment options
- Pain medications including prescription options like gabapentin or pregabalin
- Topical treatments such as lidocaine patches or capsaicin cream
- Antidepressants that help reduce nerve pain signals
- Nerve blocks or injections for severe cases
- Physical therapy to maintain mobility and reduce pain
- Stress management techniques like meditation or deep breathing
- Regular sleep schedule to help manage pain
- Gentle exercise as tolerated to improve overall health
- Avoiding triggers that worsen pain such as extreme temperatures
Frequently asked questions
The duration varies widely from person to person. Some people experience pain for a few months, while others have symptoms for years. About half of people with this condition improve within 1 year. Early treatment of shingles may help reduce the risk of long-lasting pain.
Getting the shingles vaccine significantly reduces your risk of developing shingles and postherpetic neuralgia. If you do get shingles, starting antiviral medication within 72 hours of the rash appearing can reduce nerve damage. Early and aggressive pain management during shingles may also help prevent this complication.
Most people describe it as burning, stabbing, or shooting pain in the area where they had shingles. The pain can be constant or come and go throughout the day. Many people also experience extreme sensitivity to touch, where even light contact from clothing feels painful.
People over 60 have the highest risk, especially if they had severe shingles symptoms. Those with weakened immune systems or chronic health conditions are also at increased risk. People who delayed treatment for shingles or had pain before the rash appeared are more likely to develop this complication.
Blood tests cannot directly diagnose postherpetic neuralgia, which is based on symptoms and medical history. However, testing for varicella zoster virus antibodies can confirm past exposure to the virus. Your doctor will mainly rely on your description of pain and its timing after shingles to make the diagnosis.
No, postherpetic neuralgia is not contagious because it is nerve damage, not an active infection. However, if you still have shingles blisters that have not crusted over, you can spread the varicella zoster virus to others. People who have never had chickenpox or the vaccine could develop chickenpox from contact with shingles blisters.
Nerve pain medications like gabapentin and pregabalin are often the first choice for treatment. Some antidepressants, particularly duloxetine and amitriptyline, also help reduce nerve pain. Topical lidocaine patches or capsaicin cream can provide relief when applied to the painful area. Your doctor will work with you to find the most effective treatment combination.
Yes, several lifestyle approaches can help manage pain and improve quality of life. Regular gentle exercise, stress reduction techniques, and maintaining a consistent sleep schedule all support pain management. Avoiding known triggers like extreme temperatures or tight clothing can prevent pain flares. Eating a balanced diet and staying socially connected also support overall wellbeing during recovery.
See a doctor if pain continues for more than a few weeks after your shingles rash heals. Also seek care if pain interferes with sleep, daily activities, or quality of life. Your doctor can prescribe medications and treatments to help manage symptoms and prevent the condition from becoming chronic.
Once postherpetic neuralgia resolves, it typically does not return in the same area. However, you could develop shingles again in a different area if the virus reactivates. Getting the shingles vaccine reduces the risk of future outbreaks. If you experience new pain or symptoms, consult your doctor for evaluation.