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Lemon
Lemon juice in hollandaise may trigger **oral allergy syndrome (OAS)** in individuals with **birch pollen allergy** (cross-reactivity with profilin proteins). Symptoms include itching/swelling of mouth/throat; rare systemic reactions. Not a top-14 allergen but relevant for OAS sufferers.
Symptoms
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Skin Rash or Hives
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Itching or Tingling in the Mouth
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Swelling of lips, face, or throat
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Digestive issues (nausea, vomiting, diarrhea)
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Difficulty breathing or wheezing
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Anaphylaxis (Severe Allergic Reaction)
Healing & Prevention
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Avoidance of lemon and lemon-containing products
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Antihistamines
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Topical corticosteroids
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Epinephrine auto-injector (for severe reactions)
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Consultation with an allergist
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Reading food labels carefully