What are the complications of Cyclic Vomiting Syndrome ?
The severe vomiting and retching that define cyclic vomiting syndrome increase the chance of developing several complications, including dehydration, esophagitis, a Mallory-Weiss tear, and tooth decay.
                
- Dehydration may occur when a person does not replace fluids that were lost because of vomiting and diarrhea. When dehydrated, the body lacks enough fluid and electrolytesminerals in salts, including sodium, potassium, and chlorideto function properly. Severe dehydration may require intravenous (IV) fluids and hospitalization.  - Esophagitisinflammation or irritation of the esophaguscan result from the stomach acid that exits through the esophagus during vomiting.  - A Mallory-Weiss teara tear in the lower end of the esophagusis caused by severe vomiting. A person with bloody vomit and stool should see a health care provider right away.  - Tooth decay or corroding tooth enamel is damage caused by stomach acid.
                

                
Seek Help for Signs or Symptoms of Severe Dehydration   People who have any signs or symptoms of severe dehydration should call or see a health care provider right away:   - excessive thirst   - dark-colored urine   - infrequent urination   - lethargy, dizziness, or faintness   - dry skin    Infants, children, older adults, and people with weak immune systems have the greatest chance of becoming dehydrated. People should watch for the following signs and symptoms of dehydration in infants, young children, and people who are unable to communicate their symptoms:   - dry mouth and tongue   - lack of tears when crying   - infants with no wet diapers for 3 hours or more   - infants with a sunken soft spot   - unusually cranky or drowsy behavior   - sunken eyes or cheeks   - fever    If left untreated, severe dehydration can cause serious health problems, such as organ damage, shock, or comaa sleeplike state in which a person is not conscious.