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Nerve pain and numbness


Overview

Peripheral neuropathy

Peripheral neuropathy is damage to the peripheral nerves. These are the nerves located away from the centre of the body, such as in the hands and feet. Unlike other cells in the body, nerve cells are not easily repaired or replaced once they are badly damaged. 

People affected by peripheral neuropathy may experience different symptoms, depending on which peripheral nerves are damaged. No two cases are exactly the same. Most often, the nerve damage causes numbness, tingling ('pins and needles') or pain in the hands and feet.

If the condition worsens, these symptoms may start to spread further up the arms and legs. Peripheral neuropathy symptoms range from mild to severe, they can appear during or after treatment, and they may be temporary or permanent.

In more severe cases, symptoms can greatly affect a person’s quality of life, but there are usually ways to manage any changes.

The nervous system

The nervous system controls everything your body does. It has two main parts:

  • central nervous system – the brain and spinal cord
  • peripheral nervous system – a network of nerves that carry messages between the brain and spinal cord, and the body.

How nerves work

Nerves are made up of nerve cells called neurons. When a nerve ending is stimulated, a tiny electrical signal is sent from neuron to neuron, eventually reaching the spinal cord and brain.

When a peripheral nerve is damaged (e.g. by chemotherapy), the electrical signals may be blocked or mixed up. This can lead to a wide range of symptoms. 

 

How common is peripheral neuropathy after chemotherapy?

The main cause of peripheral neuropathy in people affected by cancer is treatment with certain chemotherapy drugs.

For these types of chemotherapy, about 7 out of 10 people will experience some symptoms one month after treatment, and 3 out of 10 people will still have symptoms six months after treatment. The risk differs between different chemotherapy drugs.

Causes

Some types of chemotherapy that are used to treat cancer can damage peripheral nerves. If this side effect occurs, you may hear it called chemotherapy-induced peripheral neuropathy (CIPN).

Sometimes, other cancer treatments and the cancer itself can cause peripheral neuropathy. Possible cancer-related causes include:

  • certain chemotherapy drugs, particularly taxanes (e.g. docetaxel, paclitaxel), platinum drugs (e.g. carboplatin, cisplatin, oxaliplatin) and vinca alkaloids (e.g. vincristine)
  • some other cancer drugs, such as thalidomide, bortezomib and brentuximab vedotin
  • some types of cancer, especially lung cancer, myeloma and lymphoma
  • tumours pressing on nerves
  • bones breaking down and causing swelling that presses on nerves
  • surgery or radiation therapy damaging nerves.

It’s not just cancer that causes peripheral neuropathy. Other factors that may damage nerves include diabetes, shingles, heavy use of alcohol and other drugs, and a lack of certain vitamins and minerals (especially vitamin B). These factors may also increase your risk of having peripheral neuropathy after a cancer diagnosis. Smoking is another factor that can increase the risk.

Will it get better?

Some types of chemotherapy cause short (acute) episodes of peripheral neuropathy during or shortly after the cancer treatment session. These episodes tend to last a few days. 

For other types of chemotherapy, peripheral neuropathy may be longer-lasting (chronic). It can start during treatment and is more likely to occur the more treatment cycles you have had.

In some cases, peripheral neuropathy can develop or get worse over time, even after treatment has finished. After the end of cancer treatment, peripheral neuropathy symptoms may begin to improve over 6–12 months.

In some people, symptoms are permanent and may be severe. This is more likely if you have had intensive treatment, such as high-dose chemotherapy, or if you have diabetes or other risk factors for peripheral neuropathy.

Prevention

So far, no treatment has been proven to prevent peripheral neuropathy. However, if you start having symptoms during chemotherapy treatment, your doctor may reduce the doses of chemotherapy drugs or give them to you further apart. This adjustment sometimes allows the nerves to recover and prevents permanent damage.

In some cases, you may need to stop having a particular chemotherapy drug. You can talk to your doctor about how they will balance the risk of changing the chemotherapy plan against the risk of the nerve damage becoming permanent.

Researchers are studying whether wearing ice mitts and ice booties during chemotherapy treatment could help prevent the cell damage that causes peripheral neuropathy. However, there is not yet enough evidence that this works. Talk to your treatment team for more information.

Reducing your risk

Although there is no way to prevent peripheral neuropathy developing, you may be able to reduce your risk. If you have diabetes, it will be important to make sure the diabetes is well managed throughout your cancer treatment. Limiting how much alcohol you drink and not smoking may also lower the risk.

 

 

Understanding Peripheral Neuropathy and Cancer

Download our Understanding Peripheral Neuropathy and Cancer fact sheet to learn more

Download now

 

Expert content reviewers:

Dr Susanna Park, IN FOCUS research program and Senior Lecturer, Brain and Mind Centre, Faculty of Medicine and Health, The University of Sydney, NSW; Katrina Dick, Consumer; Rosemerry Hodgkin, 13 11 20 Consultant, Cancer Council WA; Phil Mendoza-Jones, Consumer; Jodie Nixon, Clinical Team Leader, Occupational Therapy, Cancer Services, Princess Alexandra Hospital, QLD; Rachel Tunney, Consumer; Jane Turner, Senior Exercise Physiologist, Sydney Cancer Survivorship Centre, Concord Hospital, NSW; Dr Shirley Wong, Consultant Medical Oncologist, Sunshine Hospital, Western Health, VIC.

Page last updated:

The information on this webpage was adapted from Understanding Peripheral Neuropathy and Cancer - A guide for people affected by cancer (2020 edition). This webpage was last updated in September 2021. 

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