Cherry allergy
Cherry allergy.
About cherry allergy
Cherry is a stone fruit closely related to plum, apricot and peach, and allergy to it is usually an IgE-mediated reaction to fruit proteins. In the UK it is most often linked to birch-pollen hay fever, causing a mild pollen-food syndrome to the raw fruit. In some people, particularly in southern Europe, allergy is directed instead at a hardier protein (a lipid transfer protein) that resists cooking and digestion and can produce broader or more serious reactions.
In the common pollen-linked form, symptoms start within minutes of eating raw cherry and are usually mild and short-lived: itching or tingling of the lips, mouth and throat, occasionally with slight swelling. Because the responsible protein breaks down with heat, cooked cherry in pies, jams or compotes is often tolerated. The lipid-transfer-protein type can cause hives, digestive upset and, less commonly, more severe reactions that are sometimes triggered or worsened by exercise or alcohol. Reactions typically appear within minutes to two hours of eating.
Diagnosis relies on the history together with skin-prick or specific-IgE blood tests, and component testing can distinguish the milder pollen-related pattern from the more concerning type. Management is based on avoiding the fruit in the form that causes trouble and checking labels on juices, jams and desserts. Most reactions are mild, but if any reaction involves throat tightening, breathing difficulty or faintness, treat it as a medical emergency and call 999.
Common triggers
- Cherry and products containing it
Symptoms
- Itching or tingling in the mouth
- Hives, itching or eczema
- Swelling of the lips, face, tongue or throat
- Stomach cramps, nausea, vomiting or diarrhoea
- Wheezing or trouble breathing
- In severe cases, anaphylaxis
Avoidance & management
- Read ingredient labels every time
- Ask about ingredients and cross-contamination when eating out
- Keep the food out of shared cooking areas
- Carry prescribed antihistamines or an adrenaline auto-injector
- Seek emergency help for any severe reaction
Sources & references
Allergy safety: what everyone should know
Mild-to-moderate reaction signs
- Itching, hives or a raised rash
- Swelling of lips, face or eyes
- Tingling mouth, sneezing, runny nose
- Stomach pain, nausea or vomiting
Anaphylaxis — call 999 (UK) or 112 (EU) immediately
- Difficult or noisy breathing, wheeze, persistent cough
- Swelling of the tongue or tightness in the throat
- Dizziness, collapse, pale and floppy (young children)
- Use an adrenaline auto-injector (e.g. EpiPen) at once if prescribed, then call an ambulance even if symptoms improve
Allergy or intolerance? A true allergy involves the immune system and can escalate quickly; an intolerance (e.g. lactose intolerance) is unpleasant but not life-threatening. The symptoms overlap, so self-diagnosis is unreliable.
Getting tested: home-testing kits based on IgG are not diagnostically valid. If you suspect an allergy, ask a GP for referral to an allergy clinic for skin-prick or specific-IgE testing and a supervised food challenge where appropriate.