Health Encyclopedia
Search Clinical Content Search Patient Health Library
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z A-Z Listings

Understanding Hyperventilation Syndrome

When you breathe, you get oxygen from the air you breathe in (inhale). You then let out carbon dioxide with the air you breathe out (exhale).Hyperventilation syndrome is a pattern of breathing where you breathe more quickly and deeply than normal. If it goes on for some time, it can cause the carbon dioxide level in the blood to get too low. This can lead to concerning symptoms all over the body.

What causes hyperventilation syndrome?

Hyperventilation syndrome may be caused from things such as:

  • Anxiety or panic (most common)

  • Pregnancy

  • Bleeding

  • Infection

  • Certain heart and lung problems

Symptoms of hyperventilation syndrome

You may have:

  • Fast or deep breathing

  • Shortness of breath or the feeling that you can’t get enough air

  • Anxiety, fear, panic, or strong feeling of dread or doom

  • Dizziness

  • Chest pain or squeezing in the chest

  • Fast, pounding, or skipping heartbeat

  • Sweating

  • Numbness or tingling around the mouth and in the fingers

  • Muscle cramps in the hands or feet

Treatment for hyperventilation syndrome

Treatment is focused on getting your breathing rate and the carbon dioxide level in your blood back to normal. If you are being treated in a hospital or healthcare provider’s office, the following or more may be done:

  • A healthcare provider may check the level of oxygen in your blood with a pulse oximeter.

  • A healthcare provider will talk with you and help you to stay calm.

  • You may be asked to try different breathing exercises, such as pursed-lip breathing. This helps slow down your breathing. You may also be asked to hold your breath for short periods.

  • You may also be given medicine to help you relax.

How can hyperventilation syndrome be prevented?

To help prevent episodes in the future, you may be told to try:

  • Breathing exercises

  • Relaxation methods, such as meditation or progressive muscle relaxation

  • Regular exercise

  • Counseling or medicines to help with an anxiety or panic disorder

Possible complications of hyperventilation syndrome

If the level of carbon dioxide becomes very low, this is called hypocapnia. It can upset the acid-base balance in the blood. It can cause problems, such as fainting and seizures.

Other possible complications of this syndrome will vary based on the cause.

When to call your healthcare provider

Call your healthcare provider right away if you have any of these:

  • Fever of 100.4°F (38°C) or higher, or as directed

  • Symptoms that don’t get better with treatment, occur more often, or get worse

  • New symptoms

Online Medical Reviewer: Chris Southard RN
Online Medical Reviewer: Marianne Fraser MSN RN
Online Medical Reviewer: Sravani Chintapalli
Date Last Reviewed: 10/1/2024
© 2000-2025 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.
Powered by Krames by WebMD Ignite

These resources and their content are provided by a third party for informational purposes and do not necessarily reflect the values and positions of Ascension, its ministries, or its subsidiaries.

About StayWell | Terms of Use | Privacy Policy | Disclaimer

The Services may integrate with Third-Party Apps or contain third-party content or provide links to third-party websites. For example, the Services may integrate with Third-Party App providers to provide you with information. You authorize Ascension to transmit information about You to and receive information about You from applicable third parties.
You agree that Ascension is not responsible for Third-Party Apps, third-party content or third-party websites, and does not make any endorsements, representations or warranties regarding the same. Your use thereof is at Your own risk and subject to the third party’s terms and conditions, as applicable. By using a Third-Party App or third-party content or websites, You agree to the applicable third party’s terms and conditions, even if Ascension does not present them to You at the time of Your use.