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Nausea and vomiting
Alternative namesEmesis; Vomiting; Stomach upset; Upset stomach
DefinitionNausea is the sensation of having an urge to vomit. Vomiting is forcing the contents of the stomach up through the esophagus and out of the mouth.
Your body has a few main ways to respond to an ever-changing, wide variety of invaders and irritants. Sneezing ejects the intruders from the nose, coughing from the lungs and throat, diarrhea from the intestines, and vomiting from the stomach.
You may have more saliva just before vomiting.
Vomiting is a complex, coordinated reflex orchestrated by the vomiting center of the brain. It responds to signals coming from:
An amazing variety of stimuli can trigger vomiting, from migraines to kidney stones. Sometimes, just seeing someone else vomit will start you vomiting, in your body's effort to protect you from possible exposure to the same danger.
Vomiting is common. Almost all children will vomit several times during their childhood. In most cases, it is due to a viral gastrointestinal infection.
“Spitting up," the gentle sloshing of stomach contents up and out of the mouth, sometimes with a burp, is an entirely different process. Some spitting up is normal for babies, and usually gets gradually better over time. Worsening spit up might be reflux disease. Discuss this with your child's doctor.
Most of the time, nausea and vomiting do not require urgent medical attention. However, if the symptoms continue for days, they are severe, or you cannot keep down any food or fluids, they may be signs of a more serious condition.
Dehydration is the main concern with most vomiting. How fast you become dehydrated depends on your size, frequency of vomiting, and whether you also have diarrhea .
The following are possible causes of vomiting:
Call the doctor immediately or take the child to an emergency care facility if you suspect poisoning or drug ingestion!
It is important to stay hydrated. Try steady, small amounts of clear liquids, such as electrolyte solutions. Other clear liquids, such as water, ginger ale, or fruit juices also work unless the vomiting is severe or a baby is vomiting.
For breastfed babies, breastmilk is usually best. Formula-fed babies usually need clear liquids.
Don't drink too much at one time. Stretching the stomach can make nausea and vomiting worse. Avoid solid foods until there has been no vomiting for six hours, and then work slowly back to a normal diet.
An over-the-counter bismuth stomach remedy like
Call 911 or go to an emergency room if you think vomiting is from poisoning or a child has taken aspirin.
Call if the person has:
Signs of dehydration include:
You should also call if:
Your health care provider will perform a physical examination, particularly to look for signs of dehydration.
To help diagnose the cause of the nausea or vomiting, your doctor will ask medical history questions, such as:
The following diagnostic tests may be performed:
If dehydration is severe, you may need intravenous fluids. This may require hospitalization, although it can often be done in the doctor's office. The use of antivomiting drugs (anti-emetics) is controversial, and they should be used only in severe cases.
A number of medicines are effective at preventing vomiting. Your doctor is unlikely to prescribe these because, in most situations, the vomiting is an important part of getting well. In some situations, however, preventing the vomiting makes life much better.
Update Date: 11/24/2003Alan Greene, M.D., F.A.A.P., Department of Pediatrics, Stanford School of Medicine; Lucile Packard Children's Hospital; Chief Medical Officer, A.D.A.M., Inc.
Last updated: Tue, 06 Jan 2009 00:20:03 GMT