What is peripheral neuropathy and how is it identified?
Peripheral neuropathy is damage to the peripheral nerves — the network that carries signals between the brain, spinal cord, and the rest of the body. It causes tingling, numbness, weakness, or burning pain, most often in the hands and feet. Deccan Hardikar Hospital in Pune offers comprehensive neurology services for the diagnosis and management of peripheral neuropathy.
Note: Peripheral neuropathy is not a single disease — it is a term covering more than 100 types of nerve damage, each with distinct causes and presentations.
The condition can affect one nerve (mononeuropathy), several nerves in different areas (multiple mononeuropathy), or many nerves simultaneously (polyneuropathy). Early identification is critical to slowing progression and preserving nerve function.
What are the very first signs of peripheral neuropathy?
Symptoms depend on which type of nerve is affected — sensory, motor, or autonomic. They typically begin gradually and worsen over time.
- Sensory symptoms: Tingling or pins-and-needles sensation in hands or feet; numbness that spreads upward; sharp, burning, or electric-shock-like pain; heightened sensitivity to touch
- Motor symptoms: Muscle weakness or cramps; loss of coordination or balance; difficulty walking or performing fine motor tasks; muscle wasting in severe cases
- Autonomic symptoms: Abnormal blood pressure or heart rate; excessive or reduced sweating; digestive problems; bladder dysfunction
The very first signs are often subtle — a mild tingling in the toes or fingertips, or a feeling that socks or gloves are always on. These early sensory changes should not be dismissed, particularly in individuals with diabetes or a history of alcohol use.
Warning: Sudden onset of weakness, paralysis, or loss of bladder/bowel control alongside neuropathy symptoms requires immediate emergency evaluation.
What are the most common causes of peripheral neuropathy?
Peripheral neuropathy has many underlying causes. Identifying the root cause is essential for selecting the correct treatment approach.
| Category | Common Examples |
|---|---|
| Metabolic / Systemic | Diabetes mellitus (diabetic neuropathy), hypothyroidism, kidney disease |
| Nutritional Deficiency | Vitamin B12, B1, B6, or E deficiency; folate deficiency |
| Toxic / Drug-Induced | Chronic alcohol use, chemotherapy agents, certain antibiotics |
| Infectious | HIV, Lyme disease, leprosy, shingles (post-herpetic neuralgia) |
| Autoimmune / Inflammatory | Guillain-Barré syndrome, lupus, rheumatoid arthritis, CIDP |
| Hereditary | Charcot-Marie-Tooth disease and other inherited neuropathies |
| Idiopathic | No identifiable cause found after thorough investigation |
Diabetes is the single most common cause of peripheral neuropathy in India. Poorly controlled blood sugar damages small blood vessels that supply peripheral nerves, leading to diabetic neuropathy — particularly in the legs and feet.
Vitamin B12 deficiency is another prevalent cause, especially in vegetarians and individuals on long-term metformin therapy. A simple blood test can confirm this.
How does a neurologist diagnose peripheral neuropathy in Pune?
Accurate diagnosis requires a structured clinical evaluation combined with targeted investigations. At Deccan Hardikar Hospital in Pune, the neuro care team follows a systematic diagnostic pathway to identify the type, severity, and underlying cause of neuropathy.
- Clinical history: Duration and pattern of symptoms, diabetes or alcohol history, medication review, family history of nerve disorders
- Neurological examination: Assessment of reflexes, muscle strength, sensation (light touch, vibration, temperature), and coordination
- Blood investigations: Fasting blood glucose, HbA1c, vitamin B12, thyroid function, kidney function, complete blood count, autoimmune markers
- Nerve conduction study (NCS): Measures the speed and strength of electrical signals in peripheral nerves — the primary objective test for neuropathy
- Electromyography (EMG): Evaluates electrical activity in muscles to distinguish nerve damage from muscle disease
- Additional tests (where indicated): Skin punch biopsy for small-fibre neuropathy, MRI of spine or brain, lumbar puncture, genetic testing
Tip: Nerve conduction studies are painless and take approximately 30–60 minutes. They provide objective data that guides treatment decisions and monitors disease progression over time.
What are the different types of peripheral neuropathy?
Peripheral neuropathy is classified by the number of nerves affected, the type of nerve fibre involved, and the underlying cause.
- Mononeuropathy: Damage to a single nerve. Carpal tunnel syndrome (median nerve compression at the wrist) is the most common example. It causes tingling and numbness in the thumb, index, and middle fingers — distinct from the diffuse pattern of polyneuropathy.
- Polyneuropathy: Damage to multiple nerves simultaneously, usually in a length-dependent pattern starting at the feet and moving upward. Diabetic neuropathy and nutritional deficiency neuropathy are typical examples.
- Multiple mononeuropathy (mononeuritis multiplex): Damage to two or more separate nerves in different areas, often associated with vasculitis or diabetes.
- Small-fibre neuropathy: Affects unmyelinated fibres responsible for pain and temperature sensation. Standard NCS may be normal; skin biopsy is required for diagnosis.
- Autonomic neuropathy: Affects nerves controlling involuntary functions — heart rate, blood pressure, digestion, and bladder control.
Distinguishing between these types is clinically important because treatment strategies differ significantly across categories.
When should you see a neurologist for neuropathy symptoms?
Consult a neurologist promptly if you experience any of the following:
- Tingling or numbness in hands or feet persisting for more than 2 weeks
- Burning or electric-shock pain that disrupts sleep or daily activity
- Progressive weakness in the legs or difficulty walking
- Loss of balance or frequent unexplained falls
- Symptoms of autonomic dysfunction — fainting on standing, unexplained sweating changes, or bladder irregularities
- Known diabetes with any new foot or leg sensation changes
- Symptoms that began after starting a new medication or chemotherapy
Do not wait for symptoms to become severe. Early neurological assessment allows treatment to begin before irreversible nerve damage occurs. Patients with diabetes should have annual neurological screening even in the absence of symptoms.
Book a Neurology Consultation at Deccan Hardikar Hospital
Located at 1160/61, University Rd, Shivajinagar, Pune 411005. Use the booking form on this page to schedule your appointment with our neurology team.
How does Deccan Hardikar Hospital in Pune approach peripheral neuropathy care?
Deccan Hardikar Hospital in Pune is a NABH Pre-Accredited superspeciality hospital with five decades of surgical and clinical excellence serving Western Maharashtra. The neurology department provides structured evaluation for peripheral neuropathy — from initial clinical assessment through nerve conduction studies, EMG, and specialist-guided treatment planning.
The hospital's integrated model means that patients with diabetic neuropathy can access nephrology and metabolic care alongside neurology, while those with autoimmune neuropathy benefit from rheumatology input within the same facility. Neurosurgical expertise is available for cases requiring surgical decompression or intervention.
- NABH Pre-Accredited quality standards
- Patient-centric care with transparent cost structures
- Multidisciplinary approach — neurology, rheumatology, nephrology, and endocrinology under one roof
- Modern diagnostic infrastructure for nerve conduction studies and EMG
- Referral centre for complex neurological cases across Western Maharashtra