Chronic Neuropathic Pain

Condition: Chronic Neuropathic Pain

Brief Overview: Neuropathic pain is pain caused by a lesion or disease of the somatosensory nervous system. Chronic neuropathic pain persists or recurs for 3 months or longer. It may result from injury or disease involving either the peripheral nerves or the brain/spinal cord.

Neuropathic pain is different from nociceptive pain, which is caused primarily by tissue injury or inflammation, such as osteoarthritis or a muscle strain. Some patients have mixed pain, with both neuropathic and nociceptive components.

Patients often describe neuropathic pain as:

Burning.
Shooting.
Stabbing.
Electric or "shock-like."
Tingling.
Pins and needles.
Painful cold.
Deep aching with nerve-related sensory changes.
Extreme sensitivity to touch.

Patients may also experience numbness or reduced sensation in the same area.

Two particularly important terms are:

Allodynia: Pain caused by something that normally should not hurt, such as clothing or bedsheets touching the skin.
Hyperalgesia: An exaggerated pain response to something that normally is painful.

Neuropathic pain may be continuous, intermittent, or triggered by touch or movement.

Prevalence: According to Open Evidence, “Chronic neuropathic pain affects roughly 7–10% of the general population, with the most-cited "best estimate" for pain with neuropathic characteristics being between 6.9% and 10% based on systematic review of epidemiological studies. [1-2] Neuropathic pain also accounts for approximately 15–25% of all chronic pain cases.”

Etiology: Per Open Evidence, “Chronic neuropathic pain is caused by a lesion or disease of the somatosensory nervous system, and is etiologically divided by the site of the lesion into peripheral and central neuropathic pain. Rather than serving a protective function, it reflects a maladaptive pathological response of the nervous system to nerve damage from a wide variety of causes, producing pain in the absence of a noxious stimulus. [1-2] The final common pathway across etiologies is neuronal hyperexcitability arising from peripheral and central sensitization. [1][3]

Peripheral neuropathic pain etiologies (peripheral neuropathy is the most common overall cause) [4]

Metabolic — diabetic distal symmetrical polyneuropathy is the single leading cause; pre-diabetes and other metabolic dysfunctions also contribute. Diabetic neuropathy arises from hyperglycemia-induced oxidative stress and nerve damage. [3-5]
Mechanical/traumatic — peripheral nerve injury, painful radiculopathy, nerve compression, neuroma, and post-traumatic/post-surgical neuralgias. [1-2]
Infectious — postherpetic neuralgia, HIV, and leprosy. [2][5]
Toxic — chemotherapy-induced peripheral neuropathy (mitochondrial dysfunction and neurodegeneration). [3][5]
Immune/inflammatory — Guillain–Barré syndrome and related inflammatory neuropathies. [5]
Cranial — trigeminal neuralgia. [1-2]
Inherited/genetic channelopathies — inherited neuropathies and sodium-channel disorders (e.g., inherited erythromelalgia) causing peripheral nerve hyperexcitability. [4-5]

Central neuropathic pain etiologies (lesion/disease of spinal cord or brain) [2][5]

Cerebrovascular — central post-stroke pain from lesions affecting central somatosensory pathways. [2][5]
Neurodegenerative — notably Parkinson disease. [5]
Spinal cord — spinal cord injury, syringomyelia. [5]
Demyelinating — multiple sclerosis, transverse myelitis, neuromyelitis optica. [5]

Underlying pathophysiological mechanisms

Regardless of the inciting cause, chronic neuropathic pain is generated and maintained through convergent maladaptive changes in the nervous system: [1][6-7]

Peripheral sensitization — nerve injury increases pain-related gene expression in dorsal root ganglion neurons, with altered expression/function of voltage-gated sodium and calcium channels and TRP channels (TRPV1, TRPA1), lowering activation thresholds and producing ectopic spontaneous discharge in injured and neighboring intact fibers. [7-8]
Central sensitization — sustained nociceptive input increases glutamate and substance P release, enhancing NMDA-receptor activation and synaptic long-term potentiation in the spinal dorsal horn; Aβ touch fibers begin contributing to pain signaling, producing allodynia. [8-9]
Disinhibition — loss of GABAergic and glycinergic inhibitory interneurons and impaired descending modulation (shift from noradrenergic inhibition toward serotonergic facilitation) amplify pain transmission. [6][10]
Neuroimmune/glial activation — activated microglia and infiltrating macrophages release proinflammatory cytokines (e.g., TNF-α), chemokines, and BDNF that induce and maintain central sensitization. [6-7]
Structural plasticity — synaptic reorganization, Aβ-fiber sprouting into nociceptive laminae, and maladaptive cortical/network remodeling extend hypersensitivity beyond the original injury.”

Risk Factors: Risk factors depend on the underlying cause and may include:

Diabetes mellitus.
Increasing age.
Peripheral neuropathy.
Previous shingles.
Stroke.
Spinal cord injury.
Multiple sclerosis.
Chemotherapy.
Previous surgery involving a nerve.
Significant trauma.
Nerve compression.
Chronic kidney disease.
Excessive alcohol use.
Nutritional deficiencies.
Certain medications or toxins.

Commonly Associated Conditions:

Diabetic peripheral neuropathy.
Polyneuropathy.
Postherpetic neuralgia.
Lumbar or cervical radiculopathy.
Sciatica with nerve-root involvement.
Spinal cord injury.
Multiple sclerosis.
Central post-stroke pain.
Chemotherapy-induced neuropathy.
Nerve entrapment.
Postsurgical nerve injury.
Chronic pain syndromes with mixed neuropathic and nociceptive components.

Chronic neuropathic pain may also coexist with:

Depression.
Anxiety.
Insomnia.
Fatigue.
Reduced mobility.
Social isolation.
Falls.
Reduced ability to complete activities of daily living.

Mood and sleep disorders can worsen the impact of neuropathic pain and should be assessed as part of pain management.

Common Medications:

Gabapentin
Pregabalin
Duloxetine
Tricyclic antidepressants
Topical lidocaine, capsaicin
Medication for any underlying cause

Common Labs, Imaging, and Tests: There is no single test for chronic neuropathic pain.

Diagnosis requires identifying a plausible nervous-system lesion or disease and determining whether the pain follows an appropriate neurological distribution. Symptoms such as burning or electric pain alone are not enough to establish the diagnosis.

Testing depends on the suspected underlying cause.

Labs: CBC, CMP, Hgb A1c, Vitamin B12, TSH, serum protein electrophoresis/immunofixation
EMG, nerve conduction studies
MRI

Common Symptoms: Neuropathic pain can vary significantly between patients.

Common descriptions include:

Burning.
Shooting.
Electric shocks.
Stabbing.
Pins and needles.
Tingling.
Painful cold.
Deep aching.
Crawling sensations.
Extreme sensitivity.

Allodynia

Normally nonpainful stimulation causes pain.

Examples:

Bedsheets touching the feet.
Clothing touching the skin.
Light touch.
Water from a shower.

Hyperalgesia

A painful stimulus produces a much stronger pain response than expected.

Sensory Loss

Patients may simultaneously experience:

Numbness.
Reduced temperature sensation.
Reduced pain sensation.
Reduced vibration sensation.

Pain and numbness can occur in the same body region.

Functional Effects

Chronic neuropathic pain may interfere with:

Walking.
Exercise.
Sleep.
Dressing.
Bathing.
Household activities.
Work.
Social activity.
Mood.
Concentration.

Common Treatments:

Medication (see above)
Treatment of any underlying cause
Physical therapy
Occupational therapy
Psychological, behavioral treatment
TENS
Pain management referral

Physical Findings:

Decreased sensation.
Allodynia.
Hyperalgesia.
Altered temperature sensation.
Reduced vibration or position sense.
Weakness.
Reduced or abnormal reflexes.
Muscle atrophy.
Abnormal gait.

Potential Complications and Contraindications:

Chronic sleep disturbance.
Reduced mobility.
Physical deconditioning.
Falls.
Reduced independence.
Depression.
Anxiety.
Social isolation.
Medication adverse effects.
Medication-related cognitive impairment.
Respiratory depression from high-risk medication combinations.
Reduced quality of life.

When sensory loss accompanies neuropathic pain, additional complications may include:

Unrecognized burns.
Cuts.
Pressure injuries.
Foot wounds.
Infection.

Pain itself does not reliably indicate whether tissue injury is present because a patient with nerve damage may have both severe pain and reduced protective sensation.

General Health and Lifestyle Guidance:

Take medications exactly as prescribed.
Report medication adverse effects.
Do not abruptly stop prescribed gabapentinoids, antidepressants, opioids, or other medications without provider direction.
Maintain appropriate follow-up with the healthcare provider managing the underlying cause.
Participate in safe physical activity according to medical and therapy recommendations.
Avoid prolonged inactivity when medically appropriate.
Use prescribed cane, walker, brace, or other equipment.
Address fall hazards in the home.
Maintain a regular sleep schedule.
Address depression, anxiety, or severe sleep disturbance with the healthcare team.
Use pacing strategies rather than alternating prolonged inactivity with excessive activity.
Protect areas with reduced sensation from burns, cuts, and pressure.
Do not use heating pads directly on areas with impaired sensation.
Check numb feet or other high-risk skin areas regularly.
Limit excessive alcohol use.
Maintain diabetes management when applicable.
Keep an updated medication list.

Suggested Questions to Ask Patients:

Pain Assessment

Where is your pain?
Has the location changed?
How would you describe it?
Does it feel burning, shooting, stabbing, electric, tingling, or shock-like?
Is the pain constant or does it come and go?
How severe is it?
Has the pain become better, worse, or stayed about the same?
Does light touch or clothing hurt the area?
What makes the pain worse?
What provides relief?

Functional Impact

Is the pain affecting your walking?
Is it limiting your normal activities?
Is it interfering with bathing or dressing?
Have you stopped doing activities because of the pain?
Is the pain waking you from sleep?
Is pain making it difficult to exercise or participate in therapy?

Sensory and Neurological Symptoms

Do you also have numbness or tingling?
Has the numbness changed or spread?
Have you noticed any new weakness?
Any difficulty lifting your foot?
Any difficulty using your hands?
Has your walking changed?
Are you more unsteady?
Have you fallen or almost fallen?

Medication Assessment

What medication are you taking for nerve pain?
Is it helping?
Are you taking it exactly as prescribed?
Does it improve your ability to sleep or complete daily activities?
Are you experiencing dizziness or sleepiness?
Any confusion?
Any new swelling?
Any constipation?
Have you fallen since starting or changing the medication?
Are you also taking an opioid, benzodiazepine, sleep medicine, or muscle relaxer?
Have there been any recent medication changes?

Sleep and Mood

How is the pain affecting your sleep?
How many hours are you sleeping?
Are you feeling unusually tired during the day?
Has chronic pain affected your mood?
Have you been feeling depressed or hopeless?
Is anxiety making the pain harder to manage?
Have you had thoughts of hurting yourself?

Skin and Foot Safety

When numbness is present:

Are you checking the affected area regularly for wounds?
Have you noticed any cuts, blisters, sores, redness, burns, or swelling?
Are you able to inspect your feet?
Do you need caregiver help checking them?

Follow-Up

Which provider currently manages your neuropathic pain?
Are you followed by neurology, pain management, or another specialist?
When is your next appointment?
Has your provider been informed about your current symptoms?
Are you participating in physical or occupational therapy?

⚠️ Neurologic Symptom-Change Guidance

For any new neurologic symptom or meaningful change/worsening of an existing neurologic symptom, advise the patient or caregiver to contact the patient's neurologist or appropriate treating provider to report the change.

Examples include new or worsening:

Numbness.
Tingling.
Weakness.
Foot drop.
Balance or walking difficulty.
Falls.
Change in sensory loss.
Pain spreading into a new neurological distribution.
Other neurological symptoms.

Care coordinators should not independently determine that a new or worsening neurological symptom is simply expected progression of chronic neuropathic pain.

If symptoms meet criteria for urgent or emergency evaluation, do not delay appropriate care while waiting for the neurologist or provider to respond. Follow organizational escalation policies and direct the patient to the appropriate level of urgent or emergency evaluation.

⚠️ Telephone Escalation Guidance

Chronic neuropathic pain is generally not an emergency by itself. The important question is whether the patient is reporting pain alone or pain accompanied by a new neurological or systemic warning sign.

Emergency — Follow 911/Emergency Protocol

Follow organizational emergency protocol for:

Sudden facial droop.
Sudden one-sided weakness or numbness.
Sudden difficulty speaking.
Sudden new severe balance or coordination difficulty.
New inability to walk.
New significant paralysis.
Severe difficulty breathing.
Marked sedation, slow/shallow breathing, or inability to awaken normally, particularly when gabapentin/pregabalin is combined with opioids or other CNS depressants.
Loss of consciousness.
Another suspected acute neurological emergency.

Possible Cauda Equina/Acute Spinal Compression — Emergency Evaluation

New neuropathic/radicular pain, particularly severe low-back pain or sciatica, accompanied by any of the following requires immediate evaluation:

New urinary retention.
New loss of bladder control.
New bowel incontinence.
New numbness in the saddle/genital/perineal area.
New significant or progressive leg weakness.

These are recognized warning signs of possible cauda equina syndrome or another acute compressive neurological process.

Severe Back/Neck Pain With Infection Concern

Prompt urgent evaluation is appropriate for new or worsening back or neck pain accompanied by fever and/or new neurological deficits, particularly in higher-risk patients, because serious conditions such as spinal epidural infection must be considered.

Prompt Clinical/Neurology Follow-Up

Advise the patient to report:

New neuropathic pain.
Significant increase in established pain.
Pain spreading to a new body area.
New numbness or tingling.
New weakness.
New foot drop.
Worsening balance.
Recurrent falls.
Significant functional decline.
Treatment that is no longer providing meaningful benefit.
Significant medication adverse effects.
New excessive sleepiness or confusion.
New swelling after a medication change.
Pain significantly disrupting sleep despite treatment.

If symptoms meet criteria for emergency evaluation, follow emergency protocol rather than waiting for routine follow-up.

Suggested Talking Points:

Explaining neuropathic pain

"Neuropathic pain comes from an injury or disease affecting the nerves or other parts of the nervous system. That's why it can feel burning, shooting, tingling, or like an electric shock."

Discussing treatment expectations

"Nerve-pain treatments don't always eliminate the pain completely. A good response may mean the pain is lower and you're sleeping, walking, or functioning better."

Discussing medication

"Some nerve-pain medications can cause dizziness or sleepiness, especially in older adults. Let your healthcare provider know if you're falling, feeling confused, or becoming unusually sleepy."

Discussing symptom changes

"If your usual pain changes or you develop new numbness, weakness, balance problems, or another neurological symptom, your healthcare provider needs to know. We don't want to assume every new symptom is simply your chronic nerve pain."

Discussing activity

"Chronic pain often makes people want to avoid activity completely, but too little movement can lead to weakness and reduced function. Your healthcare team or therapist can help identify a safe level of activity."

Discussing sleep and mood

"Pain, sleep, and mood can affect each other. Treating sleep problems, anxiety, or depression can be an important part of managing chronic pain."

Discussing numbness

"If the painful area is also numb, protect it carefully. You may not feel a burn, blister, or other injury normally."

Suggested SMART Goal Examples

1. Pain and Function Tracking
"I will record my pain level and one activity the pain affected at least 3 days per week for the next 4 weeks."

2. Medication Adherence
"I will take my neuropathic pain medication exactly as prescribed for the next 30 days and report concerning side effects to my healthcare provider."

3. Physical Activity
"Following my healthcare provider's recommendations, I will walk or complete my prescribed activity for ___ minutes ___ days per week for the next 4 weeks."

4. Physical Therapy
"I will complete my physical therapist's recommended exercises ___ days per week for the next 4 weeks."

5. Sleep Routine
"I will go to bed and wake up within the same 30-minute window at least 5 days per week for the next 4 weeks."

6. Fall Prevention
"I will remove loose rugs and clutter from my main walking areas within the next 7 days."

7. Assistive Device
"I will use my prescribed cane or walker during the activities recommended by my healthcare team for the next 30 days."

8. Skin Protection
For a patient with reduced sensation:
"I will inspect the numb or painful area for redness, sores, blisters, or burns every day for the next 30 days."

9. Symptom Monitoring
"I will track whether numbness, tingling, weakness, or pain spreads to a new area over the next 4 weeks and report meaningful changes to my healthcare provider."

10. Specialist Follow-Up
"I will schedule and attend my recommended neurology or pain-management appointment within the next ___ days."

11. Mood Support
For a patient whose pain is affecting mood:
"I will discuss my depression, anxiety, or mood concerns with my healthcare provider at my appointment on ___."

12. Activity Pacing
"I will divide one physically demanding daily activity into shorter periods with planned rest breaks for the next 2 weeks and track whether this improves my ability to complete the activity."

Sources:

International Association for the Study of Pain (IASP) — current definition and classification of neuropathic and chronic neuropathic pain.
International Association for the Study of Pain — 2026 Global Year: Neuropathic Pain, including current clinical identification, burden, symptoms, and prevalence resources.
National Institute of Neurological Disorders and Stroke — peripheral neuropathy and neuropathic-pain treatment overview.
NICE — Neuropathic Pain in Adults: Pharmacological Management in Non-Specialist Settings, current 2025 publication.
American Diabetes Association — Standards of Care in Diabetes—2026, painful diabetic neuropathy treatment and medication safety.
American Academy of Neurology — Oral and Topical Treatment of Painful Diabetic Polyneuropathy Practice Guideline Update.
Centers for Disease Control and Prevention — Clinical Practice Guideline for Prescribing Opioids for Pain and current nonopioid pain-treatment resources.
U.S. Food and Drug Administration — gabapentin/pregabalin respiratory-depression safety warning.
American Geriatrics Society — 2023 AGS Beers Criteria, medication and drug-interaction risks relevant to older adults.
American Association of Neurological Surgeons — cauda equina syndrome neurological warning signs.
Open Evidence
https://my.clevelandclinic.org/health/diseases/15833-neuropathic-pain
https://www.merckmanuals.com/home/quick-facts-brain-spinal-cord-and-nerve-disorders/pain/neuropathic-pain

⚠️ Medical Disclaimer

This resource is provided for educational and informational purposes only and is not intended to replace professional medical advice, diagnosis, or treatment. The information presented is general in nature and may not apply to every individual or health situation.

Individuals should consult their physician or other qualified healthcare professional for personalized medical advice, diagnosis, or treatment recommendations related to their specific health conditions and should not begin any new exercise program or change their diet or medications without consulting their healthcare professional.

Call 911 if you are experiencing a medical emergency.