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    Understanding Cyclic Vomiting Syndrome (CVS) 

    Cyclic vomiting syndrome (CVS) is an uncommon health problem in adults. It occurs when you have sudden, recurring episodes or attacks of vomiting. The attacks may occur over a period of a few days or weeks. In between the episodes, you are otherwise healthy. You may have CVS for months to years.

    What causes cyclic vomiting syndrome

    Researchers don’t know the exact cause of CVS. It may be linked to problems with the digestive system or other parts of the body. It may also be genetic. People with the condition often have migraines or a family history of them.

    Symptoms of cyclic vomiting syndrome

    The main symptom of CVS is sudden, recurring episodes of vomiting. They may occur several times a month or several times a year. The episodes follow a similar pattern every time you have them. They tend to start at the same time and last about the same amount of time (hours to days). The pattern is unique to you. Between episodes, you won’t have any nausea or vomiting.

    You may have these other symptoms during an attack:

    • Stomach pain

    • Heaving

    • Fever

    • Loss of appetite

    • Dizziness

    • Sensitivity to light

    • Sluggishness

    • Diarrhea 

    Some people with CVS find that symptoms start after a certain trigger. Triggers may include stress, a lack of sleep, substance use, an infection, and certain foods like chocolate or cheese. In women, the syndrome may happen at the same time as their menstrual period.

    Treatment for cyclic vomiting syndrome

    Treatment for CVS may include:

    • Medicines. Certain medicines may help stop vomiting and nausea. You may need to take them regularly to prevent an attack. Or you may take them to stop or ease an episode once it has started. Medicines include those used to treat migraines and depression, antihistamines, antiemetics, and some seizure medicines. Some supplements such as CoQ10 are also advised. But check with your provider before starting any herbals or supplements.

    • Supportive care. You may need to stay in the hospital if you have a severe case of CVS. This is to help treat or prevent dehydration. You may need intravenous (IV) fluids. Pain relievers may help with stomach pain.

    • Lifestyle changes. Trying to stay away from triggers such as stress or certain foods may help prevent symptoms. Meditation, relaxation, mindfulness, and biofeedback may help. A similar syndrome from cannabis use exists. Not using cannabis helps prevent symptoms in this type of cyclic vomiting syndrome.

    Possible complications of cyclic vomiting syndrome

    • Dehydration

    • Irritated or damaged esophagus

    • Tooth decay

    • Migraine headaches

    Call 911

    Call 911 if any of these occur:

    • Trouble breathing

    • Confusion

    • Drowsiness or trouble waking up

    • Fainting or loss of consciousness

    • Rapid heart rate

    • Chest pain

    When to call your healthcare provider 

    Call your healthcare provider or seek medical care right away if you have any of these:

    • Fever of 100.4°F (38°C) or higher, or as directed by your healthcare provider

    • Continued vomiting (unable to keep liquids down) for 24 hours

    • Less urine than usual or extreme thirst

    • Pain that gets worse

    • Symptoms that don’t get better, or get worse

    • New symptoms

    Online Medical Reviewer: Jen Lehrer MD
    Online Medical Reviewer: L Renee Watson MSN RN
    Online Medical Reviewer: Rita Sather RN
    Date Last Reviewed: 11/1/2022
    © 2000-2024 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.
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    Southern New Mexico
    Surgery Center

    2301 Indian Wells Rd. Suite B
    Alamogordo, NM 88310
    www.snmsc.org

    Phone: 575.437.0890
    Fax: 575.437.0905
    Email: info@snmsc.org

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