Nausea and Vomiting

Digestive Disease Myths Slideshow

Medical Author: Benjamin C. Wedro, MD, FAAEM
Medical Editor: Melissa Conrad Stöppler, MD

• Introduction to nausea and vomiting
• What causes nausea or vomiting?
  • Acute gastritis
  • Central causes
  • Association with illness
  • Medications and medical treatments
  • Bowel obstruction
  • Pregnancy
  • Patient Discussions: Nausea And Vomiting - Describe Your Experience
• What about vomiting in infants?
• What can I do at home for nausea or vomiting?
• When should I call the doctor regarding nausea and vomiting?
• How is the source of nausea or vomiting diagnosed?
• How is nausea or vomiting treated?
• Nausea and Vomiting At A Glance

Introduction to nausea and vomiting

Nausea and vomiting are symptoms of an underlying disease and not a specific illness. Nausea is the sensation that the stomach wants to empty itself, while vomiting (emesis) or throwing up, is the act of forcible emptying of the stomach.

Vomiting is a violent act in which the stomach has to overcome the pressures that are normally in place to keep food and secretions within the stomach. The stomach almost turns itself inside out - forcing itself into the lower portion of the esophagus (the tube that connects the mouth to the stomach) during a vomiting episode.

What causes nausea or vomiting?

There are numerous causes of nausea and vomiting. These symptoms may be due to the following:

• acute gastritis
  
  
• central causes (signals from the brain)
  
  
• association with other illnesses remote from the stomach
  
  
• medications and medical treatments
  
  
• mechanical obstruction of the bowel

Acute gastritis

Acute gastritis (gastro=stomach + it is= inflammation) is often caused by an offending agent which irritates the lining of the stomach. Examples of these include:

• Infections: Infections are often the cause, whether it is a common virus or an infection that is contracted from travel. There may be associated crampy upper abdominal pain, fever ,and chills may be present. Common viral infections include noroviruses and rotavirus. Parasitic infections often are associated with diarrhea but may also have a component of nausea and vomiting. Infection by bacteria in the Helicobacter family (like H. Pylori) can also be the infectious agent.
  
  
• Stomach flu: Stomach flu is a non-specific term used to describe vomiting and diarrhea associated with a viral infection. It should not be confused with influenza, whose symptoms include fever, chills, cough, and myalgias (muscle pain).
  
  
• Food poisoning: Food poisoning may cause significant vomiting and usually is caused by a bacterial toxin. Symptoms begin within a couple hours of eating contaminated or poorly prepared food and may last for 1-2 days. Sources of food poisoning include Salmonella, Campylobacter, Shigella, E. coli, Listeria, or Clostridium botulinum (botulism).
  
  
• Other stomach irritants: alcohol, smoking, and non steroidal anti-inflammatory medications such as aspirin and ibuprofen may irritate the stomach lining.
  
  
• Peptic ulcer disease: Peptic ulcer disease can range from mild irritation of the stomach lining to the formation of a defect in the protective lining of the stomach called an ulcer.
  
  

• Gastroesophageal reflux disease (GERD, reflux esophagitis): Nausea or vomiting is also associated with irritation of the lining of the esophagus

Nausea And Vomiting - Describe Your Experience

The MedicineNet physician editors ask:

Please describe your experience with nausea and vomiting.

Comment submissions for this question have ended.
See 21 Viewer Comments

View Comments

From the Doctors at MedicineNet.com

Dental Care for Babies - Learn when and how to start caring for your baby's teeth, and read about treatment of teething symptoms in infants. Cleaning your baby's gums before teeth emerge may prevent tooth decay. Source:WebMD Medical Reference from The Cleveland Clinic Staph Infection (Staphylococcus Aureus) - Read about Staph infection symptoms, signs (boils, rash), causes (Staphylococcus aureus bacteria), types, treatment (antibiotics) and complications (impetigo, cellulitis). Source:MedicineNet Brain Tumor - Read about brain tumor symptoms such as headaches, nausea or vomiting, balance and walking problems, mood and personality changes, memory problems, and numbness or tingling in the legs. Source:Government Read 133 more Nausea and Vomiting related articles ... Salmonella Tomato Warning Expanded Younger Women Miss Heart Attack Signs Brain-Eating Amoeba Strikes in Summer 3 Women Suffer Kidney Failure After Derriere Injections Standard Hepatitis B Treatment Bested by Newcomer Awake During Surgery: How Rare? U.S. Food Safety: Foodborne Illnesses a Menu for Disaster FDA OKs Nexium for Kids 1-11 Ministroke: Quick Care Pays Off What's Behind ‘Cloverfield' Illness?