Chemotherapy-induced neuropathy is nerve damage from cancer treatment. It hits people who have already been through a great deal.
What is chemotherapy-induced peripheral neuropathy?
Several chemo drugs are neurotoxic (toxic to nerves). They harm the peripheral nerves, the long nerves out to the hands and feet. The damage grows with the dose. It can keep going for months after treatment ends.
It is under-treated. Part of the reason: people in cancer treatment do not want to complain about it.
What are the symptoms of chemo neuropathy?
- Numbness and tingling in hands and feet, often the same on both sides.
- Trouble with buttons, keys and fine tasks.
- Balance problems.
- Cold sensitivity with certain drugs.
How is chemotherapy-induced neuropathy treated?
- Confirming it and grading how bad it is with nerve conduction testing.
- Medicine aimed at nerve pain.
- Physical therapy for balance and hand function.
- Working with your oncology (cancer) team.
To be seen, call us or request an appointment.
What usually gets missed
The problem is not that doctors miss it. It is that patients do not report it. People in cancer treatment routinely play it down because it seems small next to the cancer. And doctors focused on the cancer do not always ask.
That matters because it is dose-limiting. It can set a limit on how much chemo you get. Reporting it early can change the chemo plan and prevent permanent damage. Reporting it late cannot.
Does neuropathy from chemo go away?
Platinum drugs typically show coasting. Symptoms get worse for weeks or months after treatment stops, then level off. People who are not warned think the drug is still in them or the cancer is back.
Partial recovery over one to two years is common. Full recovery is less common. For the pain, duloxetine has the best evidence of the drugs we have.
When this becomes urgent
Tell your oncology team about new or worsening numbness right away, not at the next visit. It is dose-limiting, and plan changes made early prevent permanent damage. Weakness that gets worse fast, or trouble breathing or swallowing, needs emergency care.
Why does chemotherapy cause neuropathy?
Several types of chemo damage peripheral nerves directly. Platinum drugs, taxanes and vinca alkaloids do it most often. The damage hits the longest nerve fibers (axons) hardest. That is why symptoms start in the toes and fingertips and move inward in a stocking-and-glove pattern. It builds with each dose. For many people it starts during treatment and keeps getting worse for a while after the last cycle. This is called coasting.
What it gets confused with
It is often confused with diabetic neuropathy when both could explain it. It is also confused with low B12. Low B12 can be corrected, so it is worth ruling out, not assuming. If symptoms are much worse on one side, or in one limb only, look for a pinched nerve instead. That is because chemo neuropathy is usually the same on both sides.
What we measure
What you can do, not a number. How far you walk, how long you sleep, what tasks you are back to, how much medicine you need. We record those at the start and compare them later. The reason: a treatment that nudges a pain score for a while but changes nothing you can do has not done much. It is also how we decide whether to keep going, change or stop.
Common questions
Will it improve after treatment ends?
Often in part, over months. Some loss can be permanent. That is why it is worth treating instead of waiting.
Is there anything that helps the pain?
Several types of medicine have fair evidence for nerve pain. Correcting things that add to it, such as low B12 or poor blood sugar control, matters too. Balance and fall risk need attention as well, since less feeling in the feet affects your footing.
What kind of nerve damage does chemo cause?
Damage to the peripheral nerves, the long nerves that carry feeling to your hands and feet. Platinum drugs, taxanes and vinca alkaloids cause it most often. The longest fibers are hit first. So it starts in the toes and fingertips and moves inward in a stocking-and-glove pattern. It usually affects both sides evenly. Expect numbness, tingling, trouble with balance and fine tasks, and sometimes cold sensitivity.
How long does nerve damage take to heal after chemo?
Longer than most people expect. With platinum drugs, symptoms often keep getting worse for weeks or months after the last cycle. Then they level off. This is called coasting. People who are not warned often think the drug is still in them or the cancer is back. After that, partial recovery over one to two years is common. Full recovery is less so.
Is chemotherapy-induced peripheral neuropathy permanent?
It can be, in part. Many people get some feeling back over months. But some loss can stay for good. That is why it is worth treating now instead of waiting. The damage builds with each dose, so tell your oncology team about new numbness early. A change to the plan made early can prevent permanent damage. A late report cannot undo it.
Sources
- Loprinzi CL et al. Prevention and Management of Chemotherapy-Induced Peripheral Neuropathy in Survivors of Adult Cancers: ASCO Guideline Update. Journal of clinical oncology : official journal of the American Society of Clinical Oncology, 2020. PubMed 32663120
- Burgess J et al. Chemotherapy-Induced Peripheral Neuropathy: Epidemiology, Pathomechanisms and Treatment. Oncology and therapy, 2021. PubMed 34655433
- Seretny M et al. Incidence, prevalence, and predictors of chemotherapy-induced peripheral neuropathy: A systematic review and meta-analysis. Pain, 2014. PubMed 25261162
- Desforges AD et al. Treatment and diagnosis of chemotherapy-induced peripheral neuropathy: An update. Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie, 2022. PubMed 35104697
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