Cramps and Cancer

Persistent cramping of the leg and other muscles is a common side effect of cancer and cancer treatment, especially at night, which may affect sleep.
A muscle cramp or spasm is a painful tightening of a muscle. It may be sudden, and the muscles may feel tight or stiff. It may make it hard to move the muscle, but it usually lasts only a few minutes.
Some conditions and treatments associated with cancer may worsen leg cramps.

These include:

  • Medications, including chemotherapy, targeted therapies, immunotherapies, hormone drugs, and those to treat bone loss
  • Physical treatments, such as radiation therapies
  • Growth of tumors in or around the affected muscle
    Increased white blood cell number

Tips to help deal with and prevent leg cramps:

  • Make sure you’re well-hydrated. Your care team should help you correct any dehydration or electrolyte imbalance, which may include supplements.
  • Keep warm—cold temperatures and shivering may bring on cramps.
  • Change positions often, even if you’re in bed. Bend and straighten your legs in bed to exercise them.
    Stretch gently before lying down.
  • Ask your care team about massaging the cramps.

Leg cramps can be an uncomfortable and disruptive side effect of cancer and its treatments, but they don’t have to take over your life. Always communicate openly with your care team. They can provide tailored advice. Remember, managing side effects is essential to your cancer care journey.

This content is provided for your general education and information only. It does not necessarily reflect Belong’s views and opinions. Belong does not endorse or support any specific product, service, or treatment.

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