Fish allergy is a fairly widespread allergic reaction in recent years to both river and sea fish species. Only sometimes allergic manifestations are associated with a certain type of fish, whereas in most cases several species of fish provoke an allergy. The most allergenic species are the whole subspecies of salmon, eel, catfish and tuna. Sometimes there may be a cross-allergic reaction with seafood such as crustaceans and molluscs.
Smoking, drying and heat treatment practically do not affect the allergenic properties of fish products, therefore for a person with protein intolerance, fish are presented with the same danger of baked, smoked and dried fish. Often the allergic reaction develops after the inhalation of vapors arising during the preparation of products from fish, which is quite an atypical phenomenon for most food allergens.
Allergy to fish in a child often occurs even in the case when his food was cooked in the same kitchen utensils, where before the fish products were prepared, despite the fact that the pan or pan was thoroughly washed. This clearly indicates that even the microscopic remaining protein molecule of the fish can trigger the development of an allergic reaction. Often, if a person has this type of allergy, there is an allergy to fish feed (more often to daphnia).
In the event that the diagnosis of fish allergy is confirmed, you should start to closely monitor the composition of the dishes that are offered at a party, restaurant or cafe. To do this, it should be asked whether the food received was cooked in the same oil as before used for frying fish. It is also necessary to find out exactly what salads were seasoned, because fish protein may be part of some seasonings. In addition, you should carefully study the purchased products, because often they can contain components such as disodium inosine, fish flavor, alginate and agar, which for this type of allergic reaction are contraindicated.
Some people, resigned to the allergy to fish and refusing because of this from all fish products do not even suspect that in their bodies such a fish parasite like helminth anizakidosis, capable of causing quite strong allergic reactions, can live. This suggests that an independent diagnosis can be mistaken and properly diagnose and identify a true provoker of allergies can only a qualified allergist
Allergy to fish - symptoms
The reaction of the body with fish allergy is usually manifested by urticaria with characteristic symptoms: skin itch, rashes on the skin of the back, thighs, abdomen, neck and chest of blisters (occasionally rashes can be observed on the mucous membranes). Often, an allergy to fish is accompanied by an increase in the permeability of the vessels of the subcutaneous tissue and skin, which is manifested by swelling of the skin. This symptom is best seen on the face - swollen eyes, swelling around the mouth, etc. In some cases, puffiness can take the form of such a dangerous disease as Quincke's edema .
Symptoms of fish allergy on the part of the gastrointestinal tract are manifested in violation of secretory and motor functions - diarrhea , vomiting, etc. In case of severe course of an allergic reaction, headache , rapid heartbeat, fever, lowering of blood pressure, changes in blood structure can be observed. Sometimes such a life-threatening condition as anaphylactic shock can develop.
Usually the first symptoms of fish allergy begin to manifest already in the process of eating and are expressed in pricking or itching of the lips, palate, tongue, or throat; in severe cases, an asthmatic attack is often observed. Somewhat less often the symptoms appear during the first hours after the consumption of fish products and are expressed by urticaria , diarrhea and vomiting
Allergy to fish - treatment
Like any food allergy , an allergic reaction to fish and seafood implies the complete elimination of allergenic foods from the diet. And due to the fact that, as practice shows, the allergy to fish develops immediately into several types of fish products, one should always exclude from your menu: artificial fish products, Worchester sauce, crab sticks (surimi), fish cutlets soups and sauces, fish oil, shrimp and fish eggs, anchovies and their containing salad dressings, Asian dishes (tempura, sashimi, sushi).
In the products listed above, in insignificant, but sufficient quantities for the development of the allergic reaction, the protein-allergen is contained. In addition, a small amount of fish protein may contain some dressings for salads and similar foods. Also, when buying, check the composition of the products indicated on the packaging and avoid such ingredients as fish flavor, disodium inosine, alginate, araric acid and agar.
In some cases, the allergic reaction to fish products may closely coincide with the allergy to crustaceans, so the use of cancers, lobsters, crabs and shrimp should also be abandoned forever
Fish allergy to a child
Without the addition of fish, it is very difficult to imagine a full menu of any child, since it is the fish that is the best source of high-quality protein and high-grade vitamins of groups C, B, A, PP.
Also in marine fish contains a large number of useful microorganisms for children such as iodine, magnesium, calcium, phosphorus and iron. In addition, it contains fatty omega-3 acids, responsible for the structure of nerve tissues, cell membranes and retina.
To develop the allergy to fish in children is not a surprise, introduce lure fish products should be gradually, not earlier than eight months. Initially, in combination with porridge or vegetable puree (and preferably for breakfast), you can add no more than a quarter teaspoon of fish puree. In the absence of an allergic reaction, the volume can be gradually increased.
As a rule, the first symptom of fish allergy is manifested as early as the first minutes or hours after taking the allergenic product and is expressed in the form of an upset stomach, rashes on the body, tingling of the sky, throat and tongue. There may be cyanosis of the face, redness in the area of the lips, puffiness, swelling of the Quincke (rarely).
In the case of an extremely acute reaction of the body, immediate help should be immediately given, and, before her arrival, be sure to give the child an antihistamine in a dosage appropriate to his age.