Español
Questions About Cancer? 1-800-4-CANCER
  • View entire document
  • Print
  • Email
  • Facebook
  • Twitter
  • Google+
  • Pinterest

Nausea and Vomiting (PDQ®)

Causes

Chemotherapy and radiation therapy are the most common causes of nausea and vomiting in patients being treated for cancer.

Nausea is controlled by a part of the central nervous system that controls involuntary body functions (like the heart beating). Vomiting is a reflex controlled by a vomiting center in the brain. Vomiting can be triggered by smell, taste, anxiety, pain, motion, poor blood flow, irritation, or changes in the body caused by inflammation.

The most common causes of nausea and vomiting are:

Many factors increase the risk for nausea and vomiting.

Nausea and vomiting are more likely if the patient:

  • Updated: December 12, 2013