Cyclic Vomiting Syndrome in Children

Overview

Cyclic Vomiting Syndrome (CVS) is a condition where a child experiences sudden and repeated episodes of intense vomiting that have no apparent cause. These vomiting episodes can happen suddenly, often with no warning, and may last for hours or even days. Between these episodes, the child typically feels completely normal. While CVS can be distressing, both for the child and their family, understanding the condition and its management can significantly improve quality of life.

At Gertrude’s Children’s Hospital, we understand the anxiety that comes with these recurring episodes and are committed to helping families manage and treat CVS effectively.

Symptoms

  • Stomach pain: 
    • About 80% of children 
    • It can sometimes be so severe that it mimics a serious abdominal condition. 
    • The pain can also occur in the upper stomach due to irritation of the esophagus (the tube that connects the mouth to the stomach).
  • Retching (dry heaving), where they feel like vomiting but nothing comes up.
  • Nausea (feeling sick to the stomach) 
    • which is often the most distressing symptom. 
    • This nausea doesn’t get better even after vomiting and only goes away when the episode ends or the child falls asleep.
    • Children with CVS may also show behaviors like curling up in a ball, staying away from others, and turning off lights or electronics, all of which are attempts to ease their severe nausea.
  • Fever
  • Diarrhea 
  • Extreme tiredness and weakness that some cannot talk or walk.
  • Some children also experience neurological symptoms. These symptoms include:
    • Headache
    • Sensitivity to light (photophobia)
    • Sensitivity to sound (phonophobia)
    • Dizziness (vertigo)

These symptoms highlight the intense discomfort and challenges children face during a CVS episode.

Causes

The exact cause of CVS is still unclear, but several factors may contribute to it. These include:

  • Genetic Factors: Some children may have a family history of CVS or migraines, indicating a possible genetic link.
  • Migraine-Related: CVS is sometimes related to childhood migraines. In fact, many children with CVS have a history of migraines, or they may develop migraines later in life.
  • Triggers: 
    • The most common trigger is an infection, especially chronic sinus infections. 
    • Emotional stresses 
    • Certain foods, like chocolate, cheese, and foods containing monosodium glutamate (MSG), are also frequent triggers. 
    • Interestingly, positive excitement—such as birthdays, holidays, vacations, or school trips—often triggers more episodes than negative stresses.
    • Physical exhaustion or lack of sleep 
    • Allergic reactions 
    • Motion sickness 
    • Menstruation 
    • Many children experience fewer episodes during the summer when infections and school-related stress are lower.
  • Understanding these triggers can help in preventing future episodes or managing them more effectively.

Diagnosis

Diagnosing CVS can be challenging because there are no specific tests for the condition. Instead, it is usually diagnosed based on a detailed medical history and ruling out other potential causes of the symptoms. The process of diagnosis often includes:

  • Medical History: The doctor will ask about the frequency, duration, and pattern of the vomiting episodes, as well as any potential triggers. They will also ask about family history of migraines or similar symptoms.
  • Physical Examination: A thorough physical exam will be conducted to check for any underlying conditions that might cause vomiting.
  • Tests to Rule Out Other Conditions: Sometimes, doctors may order blood tests, imaging studies (like an ultrasound or CT scan), or even an endoscopy to rule out other possible causes like gastrointestinal issues, infections, or neurological problems.

Once other conditions are ruled out and the pattern of vomiting fits the description of CVS, a diagnosis can be made.

Treatment Options

At Gertrude’s Children’s Hospital, our approach to treating CVS focuses on managing the condition, preventing episodes, and reducing the severity of symptoms during an episode. Treatment options may include:

  • Identifying and Avoiding Triggers: The first step in managing CVS is figuring out what might be triggering the episodes. This can include stress management, ensuring adequate rest, and avoiding specific foods or situations that seem to bring on the vomiting.
  • Medication: Depending on the child’s symptoms and history, doctors may prescribe medications to prevent or lessen the severity of episodes. These may include:
    • Anti-nausea medications to control vomiting during episodes.
    • Migraine medications if migraines are suspected as a cause.
    • Medications to prevent episodes, such as certain antidepressants, anti-seizure medications, or beta-blockers.
  • Supportive Care During Episodes: During an episode of vomiting, the focus is on keeping the child comfortable and hydrated. This may involve:
    • Encouraging rest in a quiet, dark room.
    • Giving small amounts of fluids to prevent dehydration.
    • In severe cases, hospitalization may be necessary to administer intravenous fluids and prevent dehydration.
  • Nutritional Support: Since frequent vomiting can cause nutritional imbalances, our hospital’s pediatric nutritionists work closely with families to ensure the child maintains a healthy diet and receives adequate hydration during and after episodes.

At Gertrude’s Children’s Hospital, we take a comprehensive approach to managing CVS, addressing both the physical and emotional aspects of the condition to improve your child’s quality of life.

Patient Success Stories

At Gertrude’s Children’s Hospital, we are committed to providing the best possible care for children with Cyclic Vomiting Syndrome. Here’s why families trust us:

“When our son was diagnosed with Cyclic Vomiting Syndrome, we were terrified. The doctors at Gertrude’s Children’s Hospital acted quickly, and thanks to their expertise, he made a full recovery. We are so grateful for their care and support during such a difficult time.”

Jamesparent of a child with Cyclic Vomiting Syndrome

Cyclic Vomiting Syndrome in Children

Currently, there is no cure for CVS, but with proper management, children can lead normal, active lives. Treatment focuses on preventing episodes and managing symptoms when they occur.

Triggers can vary but often include stress, lack of sleep, certain foods (like caffeine and chocolate), physical exertion, or illness. Identifying your child’s specific triggers is an important part of managing the condition.

CVS is diagnosed through a process of elimination, meaning doctors will rule out other causes of vomiting before diagnosing CVS. The diagnosis is based on a pattern of repeated episodes of vomiting with no clear medical cause.

During an episode, it’s important to keep your child hydrated by offering small sips of fluids. Let them rest in a quiet, dark room, and monitor for signs of dehydration. If vomiting continues and you can’t keep your child hydrated, contact your doctor or visit the hospital for intravenous fluids.

Many children outgrow CVS over time, especially as they reach adolescence. However, some may continue to experience symptoms into adulthood, though the condition often becomes less severe.

Yes, stress is a common trigger for CVS episodes. Helping your child manage stress through relaxation techniques, a consistent routine, and emotional support can reduce the frequency and intensity of episodes.

Treatments may include medications to prevent episodes, manage nausea, or address any underlying migraines. Supportive care, including hydration and rest during episodes, is also important. Your doctor will create a treatment plan tailored to your child’s needs.

Contact Us

At Gertrude’s Children’s Hospital, we’re committed to helping your child manage Cyclic Vomiting Syndrome and live a full, healthy life. If your child is experiencing recurring episodes of vomiting with no clear cause, don’t wait—our expert team is here to help.

Contact us today to learn more about our Cyclic Vomiting Syndrome in Children treatment options.

Book Appointment