Shellfish Allergy And Iodine. Allergies are a number of conditions caused by hypersensitivity of the immune system to typically harmless substances in the environment. These diseases include hay fever, food allergies, atopic dermatitis, allergic asthma, and anaphylaxis. Symptoms may include red eyes, an itchy rash, sneezing, a runny nose, shortness of breath, or swelling. Food intolerances and food poisoning are separate conditions. Read more …
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Many people believe that you’ll be at risk for having an adverse reaction to iodine if you have a shellfish allergy. Instead, proteins such as parvalbumins in fish and tropomyosins in shellfish are responsible for seafood allergies. Some topical antiseptics contain povidone-iodine. OBJECTIVES: We sought to review the literature describing rates of contrast reactions and risk of contrast administration to patients with iodine allergy, shellfish
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Patients are frequently asked about iodine or seafood allergy before IV contrast material is administered because of a commonly held belief among radiologists Seafood allergies and shellfish allergy are not caused by iodine. You’re also not allergic to iodine just because you are allergic to shellfish or seafood. Shellfish and seafood also contain iodine, but that isn’t what’s responsible for food allergies.
It is safe for most people with food allergies. Shellfish allergy is sometimes confused with iodine allergy because shellfish is known to contain the element iodine. But iodine is not what triggers the reaction in people who are allergic to shellfish. Patients who are allergic to shellfish are no more likely to react to radiocontrast materials used in imaging than those with other allergies or
The vast majority of the literature exposing the myth that iodine allergy is related to shellfish, and that allergy to shellfish is to the iodine Even though shellfish contain small amounts of iodine, shellfish allergy is unrelated to the reactions some people have to radiocontrast material
New research confirms that those with shellfish allergy are not more likely to react to radiocontrast material used to improve clarity on x-ray The allergen in shellfish is a protein, not iodine. Some people with iodine allergies really have a topical sensitivity to iodine (e.g., povidone