What are the signs and symptoms of a seafood allergy?
Signs and symptoms that you may experience during an allergic reaction to seafood are those of a typical food allergy. These include diarrhoea, vomiting, swelling around the mouth, face, lips, tongue, and throat, or hives or a rash on the skin. Reactions such as these can happen between 2 and 6 hours after eating seafood.
Allergic symptoms may also be triggered by breathing in or smelling vapours from cooking seafood. This can cause symptoms such as a cough or a wheeze, or difficulty in breathing (asthma-like symptoms), and might also cause a blocked or runny nose (allergic rhinitis), or irritated, watery eyes (allergic conjunctivitis).
A very severe reaction may happen in some people. It is known as anaphylactic shock, and involves your blood vessels becoming wide and your airways becoming narrow. People suffering from anaphylactic shock may be flushed, stressed, will have a high heart rate and a low blood pressure, and will have difficulty in breathing. Anaphylaxis can be fatal, and needs treatment with adrenaline (this is usually administered with an EpiPen).
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