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Ticks that cause alpha-gal syndrome are believed to carry alpha-gal molecules from the blood of the animals they commonly bite, such as cows and sheep. Bites from other types of ticks can lead to the condition in the U.S., Europe, Australia and Asia. Request an Appointment at Mayo Clinic CausesĪ Lone Star tick bite most commonly causes the condition in the U.S. Full-body redness and warmth (flushing).Seek emergency medical treatment if you develop signs or symptoms of anaphylaxis, such as: Don't rule out red meat as a possible cause of your reaction, especially if you live or spend time outdoors in the southeastern United States or in other parts of the world where alpha-gal syndrome is known to occur. See your primary care doctor or a doctor who specializes in the diagnosis and treatment of allergies (allergist) if you experience food allergy symptoms after eating - even several hours after eating. A possible connection between a T-bone steak with dinner and hives at midnight was far from obvious. A severe, potentially deadly allergic reaction that restricts breathing(anaphylaxis)ĭoctors think the time delay between eating red meat and developing an allergic reaction is one reason the condition was overlooked until recently.Stomach pain, diarrhea, nausea or vomiting.Swelling of the lips, face, tongue and throat, or other body parts.
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Hives, itching, or itchy, scaly skin (eczema).Signs and symptoms of alpha-gal syndrome may include:
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Red meat, such as beef, pork or lamb organ meats and products made from mammals, such as gelatins or dairy products, can cause a reaction. In alpha-gal syndrome, reactions usually appear about three to six hours after exposure. Most reactions to common food allergens - peanuts or shellfish, for example - happen within minutes of exposure.
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Signs and symptoms of an alpha-gal allergic reaction are often delayed compared with other food allergies.
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