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Original site: www.cdc.gov/alpha-gal-syndrome/signs-symptoms/index.html | RestoredCDC.org is an independent project, not affiliated with CDC or any federal entity. Visit CDC.gov for free official information. Due to archival on January 6, 2025, recent outbreak data is unavailable. Videos are not restored. Access data.restoredcdc.org for restored data. Use of this site implies acceptance of this disclaimer.
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Alpha-gal Syndrome
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May 15, 2024
Symptoms of Alpha-gal Syndrome
Key points
* Symptoms of alpha-gal syndrome (AGS) may be mild or severe.
* They usually appear 2-6 hours after eating meat or dairy products.
* If you are having a severe allergic reaction, seek immediate emergency care.
What to look out for
AGS reactions can include:
* Hives or itchy rash
* Nausea or vomiting
* Severe stomach pain
* Heartburn or indigestion
* Diarrhea
* Cough, shortness of breath, or difficulty breathing
* Drop in blood pressure
* Swelling of the lips, throat, tongue, or eye lids
* Dizziness or faintness
Hives or a rash are a common symptom of an AGS reaction.
Symptoms usually appear 2-6 hours after eating meat or dairy products. They also may appear after exposure to products containing alpha-gal (for example, gelatin-coated medications).
AGS reactions can be different from person to person. They can range from mild to severe, and some may be life-threatening.
Anaphylaxis (a potentially life-threatening reaction involving multiple organ systems) may need urgent medical care.
People may not have an allergic reaction after every alpha-gal exposure.
If you think you may have AGS, talk to your healthcare provider.
When to seek emergency help
AGS can be severe and even life-threatening. Seek immediate emergency care if you are having a severe allergic reaction.
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May 15, 2024
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Alpha-gal Syndrome
Alpha-gal syndrome is a serious, potentially life-threatening allergic condition associated with the bite of a tick.
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