Cyclic Vomiting Syndrome: Symptoms, Causes & Treatment

Cyclic vomiting syndrome is a gastrointestinal disorder characterized by sudden, recurring episodes of severe nausea and vomiting. These episodes can last anywhere from a few hours to several days at a time.

This condition is diagnosed in both children and adults and is often linked to underlying hormonal or digestive issues. Experts believe it may be caused by a disruption in how the brain and the digestive tract communicate.

Although there is no permanent cure for the syndrome, gastroenterologists can provide effective treatments to manage symptoms. These medical interventions help control vomiting, ease pain, and lower the risk of long-term complications.

Main symptoms

The primary symptoms of cyclic vomiting syndrome include:

• Intense and repetitive vomiting episodes

• Abdominal pain

• Heavy sweating

• Nausea

• Headaches

• Pale skin

• Diarrhea

• Loss of appetite

• Exhaustion or fatigue

• Dizziness

• Extreme thirst

• Sensitivity to light

The recovery phase begins once vomiting stops and nausea starts to fade. During this time, energy levels and appetite typically return to normal.

Confirming a diagnosis

A gastroenterologist should diagnose this condition by evaluating your specific signs and symptoms. They will also review your personal and family medical history to rule out other issues.

To confirm the diagnosis, the doctor may order several tests. These often include a complete blood count (CBC), an abdominal ultrasound, and an endoscopy to examine the health of the esophagus, stomach, and the beginning of the small intestine.

Possible causes

The exact cause of cyclic vomiting syndrome is not yet fully understood. However, researchers believe it may be triggered by communication issues between the brain and the gut, genetic mutations, or imbalances in the hormonal and endocrine systems. According to the American Academy of Pediatrics, many pediatric cases involve triggers specifically related to emotional stress or even positive excitement before major events like holidays or birthdays.

Specific factors that may trigger a vomiting episode include:

• Stress

• Anxiety or panic attacks, particularly in adults

• Respiratory infections

• Food allergies

• High levels of excitement before birthdays or vacations, especially in children

• Menstrual cycles

• Lack of sleep

• Fasting or skipping meals

Certain foods and drinks may also act as triggers, such as chocolate, cheese, foods containing monosodium glutamate (MSG), or alcoholic beverages.

Treatment options

While the disorder has no cure, a doctor will prescribe a treatment plan to manage the condition. This usually involves medications to control nausea and pain, such as ondansetron, promethazine, and ibuprofen.

In severe cases where vomiting is uncontrollable, treatment must be administered in a hospital setting. This allows for the delivery of IV fluids and medications directly into the bloodstream to prevent dangerous levels of dehydration.

Once the vomiting episodes have passed, it is important to follow a liquid diet. Start by drinking plenty of water, fruit juices, and vegetable broths before gradually reintroducing solid foods as tolerated.

Possible complications

The potential complications of cyclic vomiting syndrome include:

• Dehydration

• Esophagitis (inflammation of the esophagus)

• Mallory-Weiss syndrome (tears in the lining of the esophagus)

• Tooth decay or cavities

Based on clinical data from the National Institute of Diabetes and Digestive and Kidney Diseases, the most significant risk associated with these episodes is severe dehydration, which can lead to life-threatening complications such as kidney failure if not treated promptly.