Understanding Neuropathic Pain
Neuropathic pain arises from damage or dysfunction within the nervous system itself — the peripheral nerves, spinal cord, or brain — rather than from ongoing tissue injury. This fundamental distinction from nociceptive pain explains why neuropathic pain often persists long after any apparent injury has healed, responds poorly to standard pain medications, and requires a specialized approach to achieve meaningful relief.
Patients consistently describe neuropathic pain with characteristic terms: burning, shooting, stabbing, electric shock-like, or "pins and needles." It is often accompanied by allodynia (pain from stimuli that should not hurt, like light touch or clothing contact) and hyperalgesia (exaggerated pain response to normally mildly painful stimuli). These features reflect abnormal neural processing — which is why treatments targeting the nervous system directly, such as nerve blocks and spinal cord stimulation, often succeed where standard analgesics fail.
Common Causes of Neuropathic Pain
- Diabetic peripheral neuropathy — the most common cause of neuropathy in the U.S., affecting approximately 50% of people with longstanding diabetes; typically causes bilateral burning, tingling, and numbness starting in the feet
- Cervical and lumbar radiculopathy — nerve root compression from disc herniation or spinal stenosis producing radicular pain in the arm or leg
- Complex regional pain syndrome (CRPS) — a severe neuropathic condition characterized by burning pain, skin changes, swelling, and autonomic dysfunction following an injury or surgery
- Post-herpetic neuralgia — persistent burning pain following a shingles outbreak, caused by damage to affected peripheral nerves
- Chemotherapy-induced peripheral neuropathy (CIPN) — nerve damage from certain chemotherapy agents causing numbness, tingling, and pain in hands and feet
- Small fiber neuropathy — damage to unmyelinated C fibers producing burning pain, often with normal standard nerve conduction studies
- Traumatic nerve injury — direct injury to peripheral nerves from trauma, surgery, or compression
Symptoms of Neuropathic Pain
- Burning, shooting, or electric shock-like pain in the arms, legs, or trunk
- Tingling, numbness, or "pins and needles" that may be constant or intermittent
- Allodynia — pain from light touch, temperature changes, or clothing contact
- Hyperalgesia — exaggerated, prolonged pain response to stimuli
- Weakness in affected limbs
- Sleep disruption due to nocturnal pain worsening
- The paradox of pain in areas that feel numb — a hallmark of neuropathic conditions
- Skin color changes, temperature differences, or abnormal sweating (especially in CRPS)
Diagnostic Evaluation
Accurate diagnosis requires identifying both the type of pain (neuropathic vs. nociceptive vs. mixed) and the underlying cause. Dr. Qureshi uses a combination of clinical history, neurological examination, electrodiagnostic studies (EMG and nerve conduction), and imaging to characterize the pain mechanism. For suspected small fiber neuropathy, skin punch biopsy measuring intraepidermal nerve fiber density provides definitive diagnosis when standard nerve conduction studies are normal.
Treatment Options
Neuropathic pain often requires a multimodal treatment strategy combining interventional procedures with medication optimization:
- Nerve blocks — targeted injections of local anesthetic and/or steroid adjacent to specific pain-generating nerves; provide both diagnostic confirmation and therapeutic relief lasting weeks to months
- Spinal cord stimulation (SCS) — the most powerful interventional tool for refractory neuropathic pain; FDA-approved for diabetic neuropathy, CRPS, and failed back surgery syndrome with strong evidence for 50%+ pain reduction in appropriate candidates
- Epidural steroid injections — for radicular neuropathic pain from nerve root compression. Learn about ESI side effects and what to expect
- Trigger point injections — for patients whose nerve pain has a myofascial component contributing to pain and muscle tension
- Sympathetic nerve blocks — for CRPS and sympathetically mediated pain; interrupts the abnormal sympathetic contribution to pain
- Medication optimization — gabapentinoids, SNRIs, and topical agents as part of a comprehensive, opioid-minimizing plan
If conservative treatments are not providing adequate relief, it may be time to explore interventional options. Learn more about when to see a pain specialist.
CRPS: A Specialized Focus
Complex regional pain syndrome (CRPS) deserves special mention as one of the most severe and disabling neuropathic pain conditions. It typically develops following a limb injury and is characterized by pain far out of proportion to the original injury, along with skin color and temperature changes, swelling, and abnormal sweating. Early aggressive treatment is critical: outcomes are significantly better when treatment begins within the first 3–6 months. Dr. Qureshi has specific expertise in CRPS management, including sympathetic nerve blocks and spinal cord stimulation evaluation.