Medically reviewed by Dr Diana Chan Xin Hui, Anaesthesiologist & Pain Specialist (MBBS, MMED (Anaesthesia), MCI, FAMS, GDA, EDRA, FIPP). Last Updated: July 14, 2026

Conditions

Postherpetic Neuralgia (Shingles Nerve Pain) Treatment in Singapore

For most people, shingles resolves once the rash heals. But for some, the nerve pain continues long after the skin has cleared, sometimes for months, occasionally for years. This lingering pain is called postherpetic neuralgia (PHN), and it's one of the most common reasons older adults live with chronic nerve pain.

Our Doctor

Dr Diana Chan: Postherpetic Neuralgia Pain Doctor in Singapore

Dr Diana Chan is a Pain Medicine Specialist with over 20 years of experience and more than 2,000 pain procedures performed. She is the former Head of the Department of Pain Medicine at Singapore General Hospital and founder of the SingHealth Duke-NUS Pain Centre. She treats patients with postherpetic neuralgia using a personalised combination of medications, nerve-targeted therapies, and minimally invasive interventional pain procedures to help relieve persistent nerve pain and improve quality of life.

What Is Postherpetic Neuralgia

How It Relates to Shingles (Herpes Zoster)

Shingles, medically known as herpes zoster, is caused by reactivation of the chickenpox virus (varicella-zoster virus), which can lie dormant in the nerves for decades before flaring up as a painful, blistering rash, usually in a band on one side of the body. Postherpetic neuralgia is the nerve pain that persists after the shingles rash has healed. It occurs because the virus, in the process of reactivating, can damage the affected nerve fibres, causing them to continue sending pain signals even after the skin has recovered.

Not everyone who gets shingles develops postherpetic neuralgia, but for those who do, the pain can be significant and long-lasting, which is why it’s treated as a distinct condition in its own right, not just “leftover” shingles.

What the Pain Feels Like

Postherpetic neuralgia pain is typically described as:

Burning or “on fire” — a persistent burning sensation in the area of the original rash
Sharp, stabbing, or shock-like pain that comes intermittently
Allodynia — pain triggered by things that shouldn’t normally hurt, such as light clothing touching the skin, a breeze, or a gentle touch
Itching alongside the pain, in some cases
Pain confined to the same area as the original shingles rash — most commonly the torso, but it can also affect the face or eye area if that’s where the shingles occurred

How Long Does Postherpetic Neuralgia Last

Postherpetic neuralgia’s duration varies considerably from person to person.

By definition, postherpetic neuralgia refers to pain that continues 90 days or more after the shingles rash has healed. Pain in the weeks immediately following a rash is common and often resolves on its own; it’s classified as postherpetic neuralgia once it persists past this point.
Most cases improve gradually over months. Many patients see significant improvement within a year, even without complete resolution.
A smaller proportion of patients experience pain that lasts for years. This is more likely in older patients, those who had more severe shingles, or when treatment for the acute shingles episode was delayed.

If you’re still experiencing significant pain three months after your rash healed, it’s worth having it properly assessed rather than assuming it will simply fade with time.

Who Is at Risk of Developing Postherpetic Neuralgia

Anyone who has had shingles can develop postherpetic neuralgia, but certain factors make persistent nerve pain more likely. You may be at higher risk if you have one or more of the following:

Age — risk increases significantly after age 50, and rises further with each decade of age
Severity of the shingles rash and pain — more severe acute pain and rash are associated with a higher likelihood of PHN
Delayed antiviral treatment — starting antiviral medication late after shingles onset raises the risk of PHN
Location of the rash — shingles affecting the face, particularly around the eye, carries a higher risk of persistent pain
Weakened immune system — conditions or medications that suppress immunity can increase both the risk of shingles and the risk of complications like postherpetic neuralgia

Because age is the single biggest risk factor, and shingles vaccination reduces both the risk of shingles and the risk of postherpetic neuralgia if shingles does occur, vaccination is worth discussing with your doctor, particularly for adults over 50.

How Dr Chan Diagnoses Postherpetic Neuralgia

A typical assessment includes:

A detailed history

Confirming the pain is in the same distribution as a prior shingles rash, understanding how long it has persisted, and how it’s affecting sleep, clothing tolerance, and daily activities.

Physical examination

Checking the affected skin for scarring consistent with prior shingles, and assessing sensation in the area, including testing for allodynia.

Ruling out other causes

Ensuring the pain pattern is consistent with postherpetic neuralgia rather than another nerve or musculoskeletal condition, particularly important if the rash history is unclear or the pain has spread beyond the original area.

Assessing pain severity and impact

Using this to guide which combination of treatments is likely to help most, since postherpetic neuralgia varies widely in severity between patients.

Postherpetic Neuralgia Treatment Options

Dr Diana Chan combines advanced interventional pain techniques with personalised treatment plans to help manage postherpetic neuralgia. Every treatment is tailored to your symptoms, pain severity, and overall health, with minimally invasive options considered whenever appropriate.

Medication Management

First-line medications for postherpetic neuralgia include gabapentinoids (such as gabapentin or pregabalin) and certain tricyclic antidepressants, both of which work on nerve pain signalling rather than general pain relief.

Topical Treatments

For pain localised to a specific area of skin, topical treatments such as lidocaine patches or capsaicin preparations can be applied directly over the affected area, often used alongside oral medication with fewer systemic side effects.

Nerve Blocks

Targeted injections around the affected nerve can reduce pain signalling and provide meaningful relief, particularly useful when oral medication alone isn’t providing adequate control or when a faster reduction in pain is needed.

Radiofrequency Ablation

For persistent, well-localised postherpetic neuralgia pain that hasn’t responded adequately to medication, radiofrequency ablation can be used to reduce pain signalling from the affected nerve, offering longer-lasting relief for suitable patients.

Neuromodulation

For more severe or long-standing postherpetic neuralgia that hasn’t responded to other treatments, neuromodulation techniques can help modulate how pain signals are processed, offering an option for patients whose quality of life continues to be significantly affected.

Do Natural Remedies or Supplements Help Postherpetic Neuralgia?

Many patients understandably look into natural or supplement-based options, particularly if they’ve found prescription medications come with side effects that are difficult to tolerate. It’s worth being clear-eyed about what the evidence actually supports:

Vitamin B12 has been studied for nerve pain conditions, but evidence specifically supporting it for postherpetic neuralgia is limited, and it isn’t a substitute for established first-line treatment.
General supplements marketed for “nerve support” typically lack strong clinical evidence specifically for postherpetic neuralgia, and quality and dosing can vary considerably between products.
This doesn’t mean lifestyle measures are worthless — good sleep, gentle activity as tolerated, and stress management can support overall coping with chronic pain, even if they don’t directly treat the underlying nerve damage.

If you’re considering a supplement or natural remedy, it’s worth mentioning it during your consultation, partly to check there’s no interaction with other medication, and partly so your treatment plan can be adjusted with a full picture of what you’re taking.

Why See a Pain Specialist for Postherpetic Neuralgia

Many patients are told to simply “wait it out” after shingles, and while some improvement is expected over time, postherpetic neuralgia is often under-treated rather than untreatable. A pain specialist becomes particularly valuable when:

Pain has persisted beyond 3 months after the shingles rash healed
Pain significantly affects sleep, clothing tolerance, or daily activities
Standard pain medication from a GP hasn’t provided adequate relief
You’re experiencing side effects from current medication that are difficult to manage
The pain is in a sensitive area, such as the face or near the eye, where careful management matters even more

A pain specialist with experience in neuropathic pain can offer targeted treatments like nerve blocks, radiofrequency ablation, and neuromodulation that go beyond what’s typically available through general medication management alone.

Dr Diana Chan’s Treatment Philosophy

Dr Chan’s approach is shaped as much by personal experience as clinical training, including her own long-term shoulder injury and caring for her father through cancer-related pain. That experience underpins a philosophy centred on three things: an accurate diagnosis before any treatment is proposed, using the least invasive effective option first, and treating pain in the context of a patient’s overall quality of life, not just a symptom to be suppressed.

Why Patients Choose Dr Diana Chan for Postherpetic Neuralgia

Specialist in Postherpetic Neuralgia Pain

More Than 20 Years of Pain Medicine Experience

Precision-Guided Nerve Blocks & Injections

Focus on Non-Surgical Relief

Singapore's Only Female Private Pain Specialist

Frequently Asked Questions

Does postherpetic neuralgia go away on its own?

For many patients, postherpetic neuralgia gradually improves over months, and a significant proportion see substantial improvement within a year. However, some patients experience pain for longer, particularly if they’re older or had more severe shingles, which is why ongoing pain is worth treating rather than only waiting for it to resolve.

Can postherpetic neuralgia come back after it's gone?

Once postherpetic neuralgia has fully resolved, it doesn’t typically return unless a person develops shingles again in the same or a different area, which is uncommon but possible, especially in those with weakened immunity.

Is postherpetic neuralgia linked to age?

Yes, age is the single strongest risk factor for developing postherpetic neuralgia after shingles, with risk increasing substantially after age 50 and continuing to rise with age. This is also why shingles vaccination is particularly recommended for older adults.

Does the shingles vaccine help prevent postherpetic neuralgia?

Shingles vaccination reduces the risk of developing shingles in the first place, and in those who do get shingles despite vaccination, it’s associated with a lower risk of developing postherpetic neuralgia or having it be severe. It’s worth discussing vaccination status with your doctor, particularly if you’re over 50 or have risk factors for shingles.