What Is Lychee Allergy?
Lychee allergy is an allergic reaction that occurs when the immune system overreacts to proteins found in the lychee fruit (Litchi chinensis). While lychee is a popular tropical fruit, it contains specific allergenic proteins that can trigger mild to severe symptoms.
Lychee allergy is frequently linked to Latex-Fruit Syndrome. This occurs because the proteins in lychee are structurally similar to the proteins found in natural rubber latex. Additionally, individuals with a birch pollen allergy may experience cross-reactivity with lychee due to similar protein structures (specifically the Bet v 1 related proteins).
In addition to latex, those who are allergic to lychees may also experience cross-reactive symptoms with these plant foods:
Lychee Allergy Symptoms
Symptoms of a lychee allergy typically manifest shortly after eating the fruit or coming into contact with its juices. These generally include:
- Hives (urticaria) and skin rashes
- Itching or tingling in the mouth and throat
- Swelling of the lips, tongue, and face (angioedema)
- Red, itchy, or watery eyes
- Shortness of breath or wheezing
- Abdominal pain and cramping
- Nausea, vomiting, or diarrhea
- Dizziness or a drop in blood pressure
In some documented cases, lychee has been known to cause anaphylaxis, a severe and potentially fatal systemic reaction that requires immediate medical intervention.
Lychee Allergy Diagnosis
At our NYC centers, we utilize several diagnostic tools to confirm a lychee allergy:
This is the most common method. An allergist places a tiny amount of lychee protein on the skin and pricks the surface. If a raised, red bump appears within 15 minutes, it is a strong indicator of an allergy.
A blood test measures the concentration of specific IgE antibodies produced by your immune system in response to lychee. This is a safe and effective method, especially for patients with severe skin conditions like eczema that may prevent skin testing.
Component Testing
Because lychee allergy is often linked to other sensitivities (like latex or birch), component testing can help determine if the reaction is a primary allergy to the fruit itself or a result of cross-reactivity.
Lychee Allergy Treatment
The most effective way to manage a lychee allergy is the complete avoidance of the fruit. This includes fresh lychees, canned lychees, and juices or desserts where lychee may be a hidden ingredient.
For mild symptoms like itching or a minor rash, antihistamines can provide relief. If the allergy triggers asthma-like symptoms, a physician may prescribe a rescue inhaler.
For individuals with a history of severe reactions, carrying an epinephrine auto-injector (such as an EpiPen or Auvi-Q) is a life-saving necessity. Epinephrine should be used at the first sign of a severe reaction, followed by emergency medical care.
If you suspect you have a tropical fruit allergy, our NYC specialists can help. Book an appointment online or call (212) 686-6321 to schedule your consultation.
Lychee Allergy Frequently Asked Questions
Is Lychee Allergy Common?
Lychee allergy is relatively rare in the United States but is more frequently reported in regions where the fruit is a staple, such as Southeast Asia. However, as tropical fruits become more common in global diets, the number of reported cases is increasing.
Can People with Latex Allergy Eat Lychee?
Caution is advised. Due to Latex-Fruit Syndrome, many people allergic to natural rubber latex also react to lychee. We recommend undergoing allergy testing before consuming lychee if you have a known latex sensitivity.
Are Canned Lychees Safer Than Fresh Ones?
Not necessarily. While some proteins are denatured (broken down) by the heat used in canning, many lychee allergens are heat-stable and can still cause a reaction in sensitive individuals.
How Is Lychee Allergy Diagnosed?
Diagnosis is usually achieved through a combination of a skin prick test, a blood test, and a detailed review of your medical history by a board-certified allergist.
What Is “Lychee Disease” and Is It an Allergy?
No. “Lychee disease” (hypoglycemic encephalopathy) is a condition related to toxins in unripe lychees that can cause low blood sugar. This is a toxicological issue, whereas a lychee allergy is an immune system response.
Can You Outgrow a Lychee Allergy?
While some children outgrow certain food allergies, tropical fruit allergies that develop in adulthood are often lifelong. Regular follow-ups with an allergist can help monitor your sensitivity levels.