Content Overview 
- Summary
- Why Chemotherapy Drugs Can Cause Nausea and Vomiting
- Definition of Nausea, Retching, Vomiting, Anticipatory Vomiting
- Drugs Which Are More Likely To Cause Nausea And Vomiting
- Factors Which Are More Likely To Cause Nausea And Vomiting
- Methods For Preventing Anticipatory Vomiting
- Non-Drug Methods For Preventing Or Reducing Nausea and Vomiting
- Drugs Which Can Be Used To Prevent Nausea And Vomiting
- What To Do And No Do If You Just Had A Bout Of Vomiting
- A Bag To Carry "Just In Case"
- Foods and Drinks That May Be Easier On The System
- Foods To Avoid When Feeling Nauseous
Chemotherapy Side Effects: Nausea and Vomiting
Definition of Nausea, Retching, Vomiting, Anticipatory Vomiting
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Nausea is an unpleasant wavelike sensation in the stomach and back of throat. It can be accompanied by symptoms such as sweating, light-headedness, dizziness, increased salivation, and weakness. It can lead to retching, vomiting, or both.
Retching is a rhythmic movement of the diaphragm and stomach muscles that are controlled by the vomiting center.
Vomiting is a process controlled by the vomiting center that causes the contents of the stomach to be forced out through the mouth. Vomiting can happen right after chemotherapy, or later. If it happens within minutes to hours after chemotherapy, it is called acute vomiting. If it develops or continues for 24 hours or more after chemotherapy, it is called delayed vomiting or delayed emesis. This type sometimes lasts for days.
Anticipatory vomiting can happen when you have had a bad experience with nausea and vomiting in the past that was not treated. This conditioned response can be stimulated by sights, sounds, or odors. As a result, you develop nausea and vomiting when placed in the same situation (for example, before receiving the next chemotherapy treatment). There are some types of treatment that may help this after it has started, but prevention is best.
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