In severe cases, shellfish allergy can lead to anaphylaxis, a dangerous allergic reaction marked by a swollen throat (airway constriction), rapid pulse, shock, and dizziness or lightheadedness. Anaphylaxis can be life-threatening.
When you have shellfish allergy, you may be at increased risk of anaphylaxis if:
- You have asthma
- You have allergic reactions to very small amounts of shellfish (extreme sensitivity)
- You have a history of food-induced anaphylaxis
Anaphylaxis can be treated with an emergency injection of epinephrine (adrenaline). If you are at risk of having a severe allergic reaction to shellfish, you always should carry injectable epinephrine (EpiPen, Auvi-Q, others).
July 12, 2014
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- Guidance for industry: Questions and answers regarding food allergens, including the Food Allergen and Labeling Consumer Protection Act of 2004 (Edition 4); final guidance. http://www.fda.gov/food/guidanceregulation/guidancedocumentsregulatoryinformation/allergens/ucm059116.htm. March 30, 2014.
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