Dr Colum Nolan
Senior Consultant Spine & Neurosurgeon
MB, BCh, BAO, LRCPSI, MRCSI, FRCSI (Neurosurgery)
Numbness or tingling in the hands and feet may initially seem like a temporary inconvenience, particularly when it occurs after sitting in one position or putting pressure on an arm. However, when these sensations persist or keep returning, it may become harder to dismiss them as a temporary effect of posture or pressure.
Numbness and tingling can occur when nerve signals are disrupted, but the source is not always obvious. Similar sensations may arise from problems affecting different parts of the nervous system, making it important to establish what is responsible before deciding how to manage them.
Where Can Numbness and Tingling Originate?
Numbness and tingling can originate from different parts of the nervous system, including peripheral nerves, spinal nerve roots and the spinal cord. Three possible explanations are peripheral neuropathy, radiculopathy and cervical myelopathy, each affecting a different part of the nervous system and producing distinct patterns of symptoms.
Peripheral Neuropathy
Peripheral neuropathy occurs when nerves outside the brain and spinal cord become damaged or dysfunctional. These nerves carry signals between the central nervous system and the rest of the body, including the hands and feet.
Common causes include diabetes, vitamin B12 deficiency and certain medications. Peripheral neuropathy may affect a single nerve or multiple nerves, depending on the underlying condition.
When multiple peripheral nerves are affected, particularly in length-dependent polyneuropathy, symptoms often begin in the feet before progressing upwards. The hands may become involved as the condition advances.
Radiculopathy
Radiculopathy develops when a spinal nerve root becomes irritated or compressed, often due to a herniated disc or degenerative changes in the spine.
The region of the spine involved determines which limbs may be affected:
- Cervical radiculopathy: Involves nerve roots in the neck and can affect the arm or hand.
- Lumbar radiculopathy: Involves nerve roots in the lower back and can affect the leg or foot.
Unlike peripheral neuropathy affecting multiple nerves, radiculopathy typically produces symptoms along the distribution of an affected spinal nerve root.
Cervical Myelopathy
Cervical myelopathy occurs when the spinal cord becomes compressed in the neck, commonly due to degenerative changes such as disc protrusion, thickened ligaments or narrowing of the spinal canal.
Because the spinal cord carries signals between the brain and multiple parts of the body, compression can affect more than one limb. Patients may experience numbness or tingling in the hands, sometimes accompanied by difficulty with fine motor tasks such as fastening buttons or handling small objects.
Other symptoms may include leg stiffness, unsteadiness or changes in walking. Unlike isolated nerve-root compression, cervical myelopathy can affect both sensation and movement across multiple areas of the body.
What Can the Pattern of Numbness and Tingling Tell You?
The location of numbness and tingling, how the sensations develop and whether they occur alongside other symptoms can provide clues about where nerve dysfunction may originate.
- Numbness in both feet: Tingling or reduced sensation that begins in the toes and gradually spreads upwards may suggest peripheral neuropathy, particularly when symptoms affect both sides in a similar pattern. The hands may become involved as the condition progresses.
- Numbness in one arm or leg: Sensations that extend from the neck into an arm or from the lower back into a leg may indicate radiculopathy. These symptoms sometimes occur alongside radiating pain or weakness in particular muscle groups.
- Numbness accompanied by coordination difficulties: Tingling in the hands alongside difficulty fastening buttons, handling small objects or maintaining balance may suggest cervical spinal cord compression, particularly when walking is also affected.
- Numbness that changes with posture or movement: Symptoms that worsen with certain neck or back movements may indicate nerve-root irritation, while tingling triggered by pressure on a particular area may suggest peripheral nerve entrapment.
These patterns are not definitive. Peripheral nerve entrapment can also produce localised symptoms that resemble radiculopathy, while certain forms of peripheral neuropathy may affect balance and walking.
More than one neurological condition may also be present at the same time. A clinical assessment is therefore needed to determine whether the symptoms arise from peripheral nerves, spinal nerve roots, the spinal cord or another cause.
What Tests Can Identify the Cause of Numbness and Tingling?
Identifying the cause of numbness and tingling involves assessing nerve function and determining where the problem may originate. The choice of investigations depends on the symptoms, neurological findings and whether there are signs of peripheral nerve dysfunction, nerve-root irritation or spinal cord involvement.
The evaluation may include:
- Neurological examination: Tests of sensation, muscle strength and reflexes help identify patterns of nerve dysfunction. Assessment of walking, balance and hand coordination may also reveal signs of spinal cord involvement.
- Nerve conduction studies and electromyography (EMG): Nerve conduction studies measure how electrical signals travel through peripheral nerves, while EMG examines electrical activity in muscles. Together, they can help distinguish peripheral nerve disorders from certain nerve-root problems, although they do not directly diagnose spinal cord compression.
- MRI of the spine: Imaging may be recommended when spinal nerve compression or spinal cord involvement is suspected. It can identify structural abnormalities, such as a herniated disc or narrowing of the spinal canal, that may affect nerve roots or the spinal cord.
- Blood tests: These may help identify underlying causes of peripheral neuropathy, including diabetes or vitamin B12 deficiency.
How Is Numbness and Tingling Treated?
Treatment depends on the underlying cause of numbness and tingling, as well as the extent of nerve dysfunction. Some conditions can be managed by addressing factors affecting nerve health, whereas others may require treatment to relieve pressure on a nerve or the spinal cord.
Treatment for Peripheral Neuropathy
Management focuses on treating the underlying condition where possible and relieving troublesome symptoms. Depending on the cause, this may involve:
- Managing underlying conditions: Improving blood glucose control in diabetes or correcting a confirmed vitamin deficiency may help prevent further nerve damage.
- Medication for nerve pain: Certain medications may reduce burning or painful tingling, although they do not necessarily restore lost sensation.
- Rehabilitation and supportive care: Physiotherapy and appropriate mobility support may help patients manage weakness or balance difficulties.
Treatment for Radiculopathy
Treatment for radiculopathy depends on the severity of nerve-root compression and whether neurological function is deteriorating. Options may include:
- Conservative treatment: Physiotherapy, activity modification and appropriate medication may help manage symptoms, particularly when there is no progressive neurological deficit.
- Spinal injections: Epidural steroid injections may provide temporary relief from radiating nerve pain in selected patients, although they do not remove the underlying compression.
- Surgery: Decompression procedures may be considered when symptoms remain disabling despite non-surgical treatment or when significant neurological weakness develops. The procedure depends on the location and cause of nerve compression.
The decision to proceed with surgery depends on the clinical findings, imaging results and the potential benefits and risks of treatment.
When Should Numbness and Tingling Be Assessed Urgently?
Numbness or tingling that persists, keeps returning or worsens over time should be medically assessed, particularly when accompanied by:
- Muscle weakness: Increasing difficulty gripping objects, lifting the foot or moving a limb.
- Walking or balance problems: New unsteadiness, frequent stumbling or difficulty coordinating movements.
- Sudden neurological changes: Sudden numbness or weakness, especially on one side of the body, or symptoms accompanied by facial drooping or speech difficulties.
Seek emergency medical attention for sudden neurological changes that may indicate a stroke, or if numbness or weakness occurs alongside new bladder or bowel dysfunction or loss of sensation around the groin. These may indicate serious neurological conditions requiring immediate treatment.
Getting to the Root of Persistent Numbness and Tingling With Dr Colum Nolan
Recurring numbness or tingling deserves proper investigation when there is no clear explanation for the symptoms. Similar sensations can arise from different neurological conditions, and treating the wrong underlying cause may leave the problem unresolved. Establishing an accurate diagnosis is therefore important before deciding on the appropriate course of care.
At Oxford Spine & Neurosurgery Centre, Dr Colum Nolan draws on his experience in neurosurgery and spinal disorders to investigate whether symptoms are related to spinal nerve roots or the spinal cord. His expertise helps patients clarify the nature of their condition and understand which treatment approaches may be appropriate for their findings.
Schedule a consultation to investigate the cause of your numbness or tingling and discuss the next steps in your care.
Frequently Asked Questions (FAQs) About Numbness and Tingling
Can numbness and tingling occur without pain?
Yes. Numbness and tingling can occur without accompanying pain, even when a nerve is affected. Some people experience reduced sensation as their main symptom, particularly with certain forms of peripheral neuropathy. The absence of pain does not necessarily mean that nerve function is normal.
Can numbness and tingling be permanent?
Yes. Prolonged or severe nerve damage can result in lasting sensory changes, particularly when the underlying condition continues to affect nerve function. Recovery depends on the cause and extent of nerve injury. Some patients regain sensation after treatment, whereas others may experience persistent numbness despite the underlying problem being addressed.
Can numbness and tingling get worse at night?
Yes. Certain peripheral nerve conditions can cause tingling or burning sensations that become more noticeable at night. Symptoms may also worsen during sleep if particular positions place pressure on a nerve. However, nighttime symptoms alone cannot establish whether the problem originates in the peripheral nerves or spine.
Meet Our Doctor
Dr Colum Nolan
Senior Consultant Spine & Neurosurgeon
MB, BCh, BAO, LRCPSI, MRCSI, FRCSI (Neurosurgery)
Dr Colum Nolan is a senior consultant spine and neurosurgeon, as well as the Medical Director of Oxford Spine & Neurosurgery Centre. He undertook specialist neurosurgery training in Ireland and Australia, and later on completed a complex spine surgery fellowship at Addenbrooke’s Hospital in Cambridge, UK.
Dr Colum held key leadership roles including Director of the Spine and Spinal Disorders Programme at the National Neuroscience Institute (NNI), as well as the Head of Neurosurgery Service at Sengkang General Hospital.
With his depth of experience, Dr Colum is committed to guiding each patient towards the safest and most effective treatment for their needs.
