Understanding Peripheral Neuropathy

Peripheral neuropathy is a condition that occurs when nerves outside of the brain and spinal cord become damaged. These nerves, known as peripheral nerves, help transmit signals between the central nervous system and the rest of the body, including the legs and feet.

When these nerves are damaged or disrupted, they may send incorrect signals or fail to send signals altogether. This can lead to symptoms such as numbness, tingling, burning sensations, weakness, or pain in the affected areas.

Peripheral neuropathy often begins in the feet and lower legs because the longest nerves in the body are typically affected first. For many people, symptoms develop gradually and may worsen over time if the underlying cause is not identified.

While peripheral neuropathy can have many possible causes, it is commonly associated with conditions that affect nerve health, circulation, or metabolism.

diagram showing peripheral neuropathy affecting leg nerves and damaged myelin sheath

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What Is Peripheral Neuropathy?

Peripheral neuropathy refers to damage affecting the peripheral nerves, which are responsible for carrying sensory information and motor signals between the body and the brain.

These nerves allow people to feel sensations such as touch, temperature, and pain while also controlling muscle movement.

When peripheral nerves become damaged, communication between the brain and the affected areas becomes disrupted. As a result, individuals may experience unusual sensations, reduced sensitivity, or muscle weakness.

Peripheral neuropathy frequently affects the feet and legs because the nerves traveling to these areas are long and more vulnerable to damage.

Over time, nerve dysfunction may interfere with balance, walking, and the ability to detect injuries in the feet.

Symptoms of Peripheral Neuropathy

Peripheral neuropathy can produce a wide range of symptoms depending on which nerves are affected.

Common symptoms may include:

Numbness in the feet or lower legs
Tingling or “pins and needles” sensations
Burning sensations in the feet or legs
Sharp or stabbing nerve pain
Muscle weakness in the legs
Increased sensitivity to touch
Loss of balance or coordination
Reduced ability to feel temperature changes

Symptoms often begin gradually and may start in the toes before progressing upward into the feet and legs.

For some individuals, symptoms may worsen at night or during periods of inactivity.

illustration showing nerve pathways in the feet affected by peripheral neuropathy

diagram comparing healthy nerve cell and damaged nerve cell in peripheral neuropathy

What Causes Peripheral Neuropathy

Peripheral neuropathy can develop when nerves become damaged due to medical conditions, injuries, or prolonged nerve compression.

Nerve damage may interfere with the ability of nerves to send and receive signals properly, leading to sensory changes or muscle weakness.

A variety of health conditions may contribute to nerve damage affecting the legs and feet.

In some cases, the exact cause of peripheral neuropathy may not be immediately clear, and further evaluation may be necessary to identify contributing factors.

Risk Factors for Peripheral Neuropathy

Several factors can increase the likelihood of developing peripheral neuropathy.

Common risk factors include:

Diabetes or blood sugar disorders
Certain autoimmune conditions
Vitamin deficiencies
Long term alcohol use
Exposure to toxins
Certain medications
Nerve compression or injury
Family history of nerve disorders

Conditions that affect circulation or metabolic health may also increase the risk of nerve damage over time.

When Should You See a Specialist?

Peripheral neuropathy should be evaluated by a specialist if symptoms begin affecting daily activities, walking, or sensation in the legs and feet.

You may want to seek medical evaluation if you notice:

Persistent numbness in the feet
Burning or tingling sensations in the legs
Sudden changes in sensation
Loss of balance or coordination
Weakness in the legs
Pain that worsens over time
Reduced ability to feel temperature or injury

Early evaluation may help identify the cause of nerve damage and prevent symptoms from progressing.

vascular specialist evaluating patient during medical consultation

How Peripheral Neuropathy May Be Evaluated

A specialist typically evaluates peripheral neuropathy by reviewing symptoms, examining nerve function, and assessing medical history.

During evaluation, a physician may test sensation, reflexes, and muscle strength in the legs and feet.

Additional testing may sometimes be recommended to assess nerve function and identify possible causes of nerve damage.

In some cases, diagnostic studies may be used to examine nerve signals or identify conditions that may be contributing to neuropathy.

doctor performing vascular ultrasound to evaluate the leg

What Are You Experiencing?

These symptoms may sometimes appear alongside peripheral neuropathy.

Leg Pain

Learn about common causes of persistent or aching pain in the legs.

Leg Cramps

Sudden muscle cramps in the legs can happen at night or during activity.

Leg Swelling

Explore common reasons why swelling occurs in the legs and ankles.

Restless Legs

An uncomfortable urge to move the legs, often worse at night.

Leg Numbness / Tingling

Numbness or pins and needles in the legs may be related to nerve irritation or circulation issues.

Burning Sensation in Legs

A burning feeling in the legs may occur when nerves become irritated or circulation is affected.

Cold Feet

Cold or numb feet may sometimes be related to circulation problems.

Heavy Legs

A feeling of heaviness or fatigue in the legs may sometimes be related to circulation problems.

Concerned About Peripheral Neuropathy?

If you are experiencing numbness, burning sensations, or tingling in the legs or feet, evaluation by a specialist may help determine the underlying cause.

A specialist can assess nerve health, evaluate symptoms, and discuss treatment approaches that may help reduce discomfort and improve function.

Find a specialist to evaluate your symptoms and explore possible treatment options.