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Shellfish allergies are highly cross reactive, but its prevalence is much higher than that of fish allergy. Shellfish allergy is the leading cause of food allergy in U.S adults. [31] As of 2018 six allergens have been identified to prawn alone; along with crab, it is the major culprit of seafood anaphylaxis. [13]
A food allergy is an abnormal immune response to food.The symptoms of the allergic reaction may range from mild to severe. They may include itchiness, swelling of the tongue, vomiting, diarrhea, hives, trouble breathing, or low blood pressure.
An adverse food reaction is an adverse response by the body to food or a specific type of food. [1] The most common adverse reaction is a food allergy, which is an adverse immune response to either a specific type or a range of food proteins. However, other adverse responses to food are not allergies.
An allergen is an otherwise harmless substance that triggers an allergic reaction in sensitive individuals by stimulating an immune response.. In technical terms, an allergen is an antigen that is capable of stimulating a type-I hypersensitivity reaction in atopic individuals through immunoglobulin E (IgE) responses. [1]
Manufacturers are given two ways in which to label food allergens. They may either state the food source name of a major food allergen in the list of ingredients, most often contained within parenthesis. (e.g. Casein (milk)) or they could instead use the word "contains" in the label, such as "contains peanuts". [2]
Shellfish allergy is among the most common food allergies. " Shellfish " is a colloquial and fisheries term for aquatic invertebrates used as food , including various species of molluscs such as clams , mussels , oysters and scallops , crustaceans such as shrimp , lobsters and crabs , and cephalopods such as squid and octopus .
While food intolerances may be mistaken for a food allergy, they are thought to originate in the gastrointestinal system. Food intolerances are usually caused by the individual's inability to digest or absorb foods or food components in the intestinal tract. [14] One common example of food intolerance is lactose intolerance.
Food protein-induced enterocolitis syndrome (FPIES) is a systemic, non-immunoglobulin E -mediated food allergy to a specific trigger within food, most likely food protein. As opposed to the more common IgE food allergy, which presents within seconds with rash, hives, difficulty breathing or anaphylaxis, FPIES presents with a delayed reaction ...