Nausea is feeling that you need to throw up. Throwing up occurs when your body forces food that is in your stomach out through your mouth. Nausea and vomiting are symptoms that are caused by many things. They can happen when a condition or disease, medicine, medical treatment, or a poisonous substance affects the area in your brain that controls vomiting. Some conditions or diseases can cause nausea, abdominal pain or cramps, and vomiting. The symptoms can be mild and go away by themselves. Other symptoms can be serious. You will need to see your healthcare provider for these.
Nausea and vomiting are common. They can be caused by many things. These include:
"Stomach flu" (gastroenteritis)
Stomach pain (gastritis)
They can also be caused by a head injury, an infection in the brain or inside the ear, or migraines. Other common causes of nausea and vomiting include:
Drugs. These include alcohol, pain medicines such as morphine, and cancer medicines.
Toxins. These are poisonous things like plants or liquids that are swallowed by accident.
Advanced types of cancer
Movement problems (psychogenic problems)
Extra pressure in the fluid that surrounds the brain and spinal cord (elevated intracranial pressure)
Nausea and vomiting are also common side effects of chemotherapy and radiation therapy. Side effects happen when treatment changes some normal cells as well as cancer cells. In this case, the cells lining your stomach and the part of your brain that controls vomiting are affected. Other more serious causes of vomiting may be hard to find early in the illness.
Call your healthcare provider right away if you have the following:
Nausea or vomiting that lasts 24 hours or more
Trouble keeping fluids down
Nausea or vomiting can often be prevented or controlled with medicines (antiemetics). Your doctor may give you antiemetics before or after treatment if you are getting chemotherapy or other medical treatments that cause nausea or vomiting.
If you have medicines to control nausea, take them before meals as directed.
Avoid fatty or greasy foods while nauseated.
Eat small meals slowly throughout the day.
Ask someone to sit with you while you eat to keep you from thinking about feeling nauseated.
Eat foods at room temperature or colder to avoid strong smells.
Eat dry foods, such as toast, crackers, or pretzels. Also eat cool, light foods, such as applesauce, and bland foods, such as oatmeal or skinned chicken.
Get a little fresh air. Take a short walk.
Talk to a friend, listen to music, or watch TV.
Take a few deep, slow breaths.
Eat by candlelight or in surroundings that you find relaxing.
Use a technique, such as guided imagery, to help you relax. Imagine yourself in a beautiful, restful scene. Or daydream about the place you’d most like to be.