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10-26-2014, 10:09 AM | #1 |
YorkieTalk Newbie! Join Date: Oct 2014 Location: Algeries
Posts: 1
| Dog Food Allergies When the body does not tolerate a food, it can react with digestive disorders. An example of intolerance is lactose maldigestion. A true allergy involves an immune-response. The allergic diseases of the digestive tract resulting from contact with an allergen of the surface cells of the intestine. One observes the appearance of urticaria, edema and diarrhea. Allergies to foods can cause gastrointestinal disorders, but also skin diseases and respiratory and nervous disorders: 1% of all skin diseases and 10% of allergic dermatoses are due to food allergies. Incidentally, on these dogs with dermatitis associated with food allergy, 15% are suffering from gastrointestinal disorders. The specific component that triggered the allergy is often difficult to define. Non-pathogenic bacteria or fungi that can be found both in food and in drinking water may be responsible. Foods often implicated variables are: milk, beef, cereals, fish, eggs, pork Allergies to cutaneous signs Dermatitis due to allergies foodborne come in various forms, but the itching is constant (100% of cases). This is often located in the face and extremities and the rash occurs a few hours after ingestion of the food. There may also papules and otitis externa. There is a very pruritic papular rash abdomen, face and limbs, which may be complicated by pyoderma, and excoriations. Another symptom was described: rubra-pilaris syndrome, which manifests itself in red color interdigital bristles (linked to an excess indican), accompanied by pruritus and eczema. This syndrome is often due to a diet all meat or meat intake of poor quality. There is no predisposition of race, age or gender. The age at onset of lesions is very variable.Hypersensitivity can reach animals less than six months. It seems that the allergy occurs after months or years of exposure to the allergen: the majority of the cases described, the ingestion of the offending substance began more than two years ago, and it is very rare that owners report a recent change in diet before the onset of clinical signs. The main causes of allergies in dogs are known proteins beef, soy, milk, and cereal proteins. The allergic dermatitis may be accompanied by digestive disorders (vomiting, chronic watery diarrhea or colitis). A food hypersensitivity can be a cause of colitis characterized by a mucoid or bloody diarrhea, intermittent or persistent. However, the gastrointestinal symptoms of food allergy are rare in dogs. The allergic reaction is caused by an individual sensitivity; therefore an observed in several dogs in a kennel diarrhea, can in no case be caused by a food allergy. The diagnosis of food allergies The diagnosis of food allergy should be eliminating other causes of cutaneous signs: parasites (sarcoptic mange cheyletiellose, trombiculose ...), FAD (allergic flea bite dermatitis), contact dermatitis, extensive pyoderma or miliary dermatitis. Precise information about the feeding habits of the animal are used to define a protein source and a source of carbohydrates that there would never ingested. To find the food that causes an allergy, they must be an elimination diet: the animal is drinking water. Toys or bones chewed usually must be removed. No "treat", no vitamin or mineral supplement is permitted during the term of the plan. This should take 3 to 4 weeks. Speaking of food allergy, improvement of pruritus and lesions at the end of the plan must be at least 75%. If the improvement is only partial, it will continue the plan 1-2 weeks. If this does not bring any better, it will consider another hypersensitivity. Confirmation of the diagnosis is made by reintroducing foods to the original plan due to a different component every 8 days. When the offending food is again met, there recurrence or exacerbation of pruritus in 48 to 72 hours (sometimes 6-7 days). Treatment and prevention of food allergies To fight against allergies from food, the only treatment, apart from the use of steroids is a dietary treatment is to avoid contact with the allergen. This implies that it has been previously identified. So we will initially treat skin lesions and, after imposing the dog fasted for 48 hours, creating a hypo-allergenic diet. The scheme, based on rice and boiled chicken, supplemented with vitamins, served with mineral water for drinking water, will be administered at least one month. If the allergy was indeed to food, the symptoms have resolved after 3 weeks to 1 month. We may then proceed with the search for the allergenic food (see above, "The diagnosis of food allergies). In the case of rubra pilaris-syndrome, dietary treatment is to reduce the proportion of meat in favor of vegetables to make cellulose and to a mineral and vitamin supplement. Last edited by Wylie's Mom; 10-26-2014 at 10:56 AM. Reason: removed links to advertising |
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