People have begun to eat crawfish from ancient times, what is not surprising because crawfish meat has excellent flavor and nutritional properties. It maintains a lot of protein and little fat, besides crawfish is very easy digested, hence, it can be used as a dietary product.
Additionally, this meat is rich in calcium, vitamins E and B12. Crawfish meat promotes the immune system work and nutritionists recommend it to people with cardiovascular system and liver diseases.
Nevertheless, quite often crawfish becomes a reason of intolerance, which takes one of the leading places on the spread of food allergies. Crustaceans belong to obligate allergens – the products that most commonly provoke reactions.
This is explained by the fact that crawfish has enough unique chemical composition and the allergy can be developed to any components of its composition. But frequently the basic culprit of the sickness is muscle protein tropomyosin.
This substance motivates a reaction from the immune system while entering the organism. It leads to a sudden increase in the concentrations of immunoglobulin E class in blood and as a result, an allergic reaction emerges.
In the case of sensitivity to crawfish meat, it is advised to be careful while eating river fish and seafood, as the high risk of cross-reaction exists.
Many dieticians recommend refraining from the active use of crawfish meat to those, who have thyroid problems. The doctors always emphasize this point, because some people think that a huge percentage of iodine have a positive impact on the disease and consume this seafood in big quantity.
However, that iodine, which a crawfish meat maintains, can assist exclusively as a way of prevention but it can not treat the problem.
The symptoms of any allergies occur immediately or some time later the exposure of the allergen. The use of crawfish dishes stimulates the appearance of digestive, skin and respiratory manifestations.
Sometimes it is enough a small amount to provoke the development of allergy. Thus, the external symptoms of hypersensitivity are the following:
- urticaria, rash;
- itching of the nose, mouth, conjunctivitis and allergic rhinitis;
- lips, throat and tongue swelling;
- shortness of breath, angioedema, wheezing breath;
- vomiting, diarrhea, dizziness, fainting;
- disorders of the gastrointestinal tract.
The most hazardous signs may be the occurrence of suffocation, a sudden drop in blood pressure, which growth instantly and can lead to death. In this situation, a person urgently needs medical assistance with the use of special drugs for allergies. Fortunately, this condition happens very rarely.
It should be stressed that not only the consumption of crawfish meat can cause an allergy, but also its smell. The protein enters the body by inhalation of water vapor during the cooking process. That is why it is substantial for allergy suffers to keep away from the places where seafood is cooked.
Crawfish Allergy Treatment
The patient should consult the allergist at the first suspicion of allergy. He evaluates the data of tests, symptoms, asks questions about hereditary predisposition in the family. After the diagnostics the doctor suggests corrective measures, which include:
1. Diet – the allergy does not develop if fully limit the contact with the products causing reactions. In order to prevent cross-reactions it is vital to eliminate crawfish and these dishes from the dietary habits:
- Seafood: shrimp and anchovies;
- Fish cutlets, soups, sauces.
2. Medications. The specialist chooses the medicine depending on the grade of allergic responses to crawfish:
- Enterosorbents: Activated carbon, Polisorb, Enterosgel, the major goal of which is to cleanse the body;
- Antihistamines: Suprastin, Loratadine, Zyrtec can suppress the action of histamine, it is preferable to choose the 3-generation antihistamines;
- Ketotifen and Cromones are used to block the membranes of mast cell from which the release of histamine occurs in large quantities;
- Corticosteroids: Dexamethasone and Prednisone serve especially in the heavy, complicated and advanced cases.
Epinephrine is regarded to be a very efficacious mean to prevent the manifestations of instantaneous allergic reaction. It relaxes bronchial smooth muscle, thus alleviating the breath. It helps to preclude anaphylactic shock.
Ointment “Advantan” fights with swelling burning sensation, redness and itching and of the skin. It acts quickly, significantly reducing the symptoms of allergy.
Sometimes the physiological blood purification with the help of plasmapheresis is used. Furthermore, the drugs on calcium-based are assigned to improve the effect of the healing, since it is proved that the absence of calcium in the organism contributes to the appearance of allergy and its complications.
3. The method of specific immunotherapy becomes very far-famed nowadays. It comprises the injection of a very small amount of the allergen under the skin, later the dose gradually increased. Such treatment induces the body to produce the blocking antibodies that can preclude an allergic reaction.
Although immunotherapy is used quite widely and medical studies show that it gives good results, its implementation is not always advisable, since in some cases the risk of complications is higher than the positive effect, which depends on the individual characteristics of the patient.
4. The traditional medicine promotes the riddance of light symptoms. It is regarded that herbal therapy is safe and has no contraindications. In most cases it is so, however, it is better to hold a consultation with a doctor before starting this curing.
The simplest and healthful recipes are described below:
- Tincture of small duckweed: 1 teaspoon of fresh duckweed is poured into 50 mg. of vodka. This solution is infused for a week and then it should be filtered. The patient dilutes 15-20 drops in water and takes 3 times a day.
- The infusion of nettle leaves: 2 tablespoons of chopped nettle leaves are poured into 2 cups of boiling water and infused for 2 hours. This tincture is taken 4 times a day on an empty stomach.
To conclude, allergic predisposition remains in the organism for the whole life but whether it will appear in the future depends on the patient’s nutrition, lifestyle and the functioning of the immune system.