Alpha-gal Syndrome: What Parents Should Know
Alpha-gal syndrome in children is a potentially serious food allergy that can develop after certain tick bites. It may cause delayed allergic reactions after a child eats beef, pork, lamb, or other mammalian products. Dr. Lily Joseph explains the symptoms parents should recognize, how alpha-gal syndrome is diagnosed, and how families can reduce their risk.
What Is Alpha-gal Syndrome?
Alpha-gal Syndrome is an allergy to a naturally occurring sugar molecule called alpha-gal, which is found in the meat of mammals such as beef, pork, lamb, and veal. Some people with Alpha-gal Syndrome may also react to other mammal-derived products, including gelatin or certain dairy products, although this is not the case for everyone. Researchers believe that in some people, a bite from the lone star tick triggers the immune system to become sensitive to alpha-gal.
Why Is It Different from Other Food Allergies?
One of the unique features of Alpha-gal Syndrome is that symptoms are often delayed. Unlike many food allergies that cause symptoms within minutes, reactions to alpha-gal typically occur 3 to 8 hours after eating mammalian meat. This delay can make it more difficult to recognize the connection between a meal and the symptoms.
What Symptoms Can Occur?
Symptoms vary from person to person and may include:
• Hives or itching
• Swelling of the lips or face
• Stomach pain
• Nausea, vomiting, diarrhea
• Severe allergic reaction including anaphylaxis
How Is It Diagnosed?
Diagnosis usually involves an allergist (like our very-own Dr. Jeong) and includes:
• A review of your child’s symptoms and medical history
• Discussion of possible tick exposure
• A blood test that looks for antibodies to alpha-gal
How can I protect my family?
The top way to prevent alpha-gal and other tick-borne illnesses is to avoid tick bites altogether. See our in-depth tick tips here. As always, if you have questions or are worried your child may have alpha-gal syndrome, don’t hesitate to call and speak with your child’s doctor!
Frequently Asked Questions
Can alpha-gal syndrome go away over time?
For some people, sensitivity to alpha-gal may decrease over time, particularly if they avoid additional tick bites. However, this varies from person to person. An allergist can monitor alpha-gal antibody levels and help determine whether dietary changes are appropriate.
Can another tick bite make alpha-gal syndrome worse?
Additional tick bites may increase or maintain a person’s sensitivity to alpha-gal. Children with alpha-gal syndrome should continue taking precautions against tick bites even after they have been diagnosed.
Are medications ever a concern for children with alpha-gal syndrome?
Some medications, vaccines, or medical products may contain ingredients derived from mammals. Most medications are not automatically unsafe for someone with alpha-gal syndrome, but parents should make sure their child’s pediatrician, allergist, pharmacist, and other healthcare providers know about the diagnosis.
Can gelatin cause an alpha-gal reaction?
Some people with alpha-gal syndrome can react to mammal-derived gelatin, which may be found in certain foods, medications, supplements, or other products. An allergist can help determine whether gelatin needs to be avoided based on your child’s individual sensitivity.
Does my child need to avoid foods cooked on the same grill as beef or pork?
Not every child with alpha-gal syndrome has the same level of sensitivity. Some may need to be cautious about cross-contact with mammalian meat or fat, while others may tolerate it. Ask your child’s allergist what precautions are appropriate.
