but to sum up, yes you can develop late onset allergies and yes you can build an immunity to your own cats.
Whether your dog or cat has a food allergy or a food intolerance, the is the same – do not let them eat the food that bothers them. That is often easier said than done. Some pets have such severe allergies that even one small treat from a well-meaning mailman can cause problems. Many different varieties of are available with combinations of novel proteins for dogs and cats with food allergies. Some dogs or cats can develop new food allergies after the original problem was diagnosed and managed. In these cases, sometimes simply switching to a different combination of novel proteins can be effective. Other times, a new elimination trial is needed to figure out what food the dog or cat is allergic to.
Cats have allergies just like humans and as with human allergies, vary in severity and can only be managed, not cured. Cats can develop allergies from to food to airborne pollens. Reactions, often severe ones, might appear suddenly at any age. Some cats develop respiratory allergies (usually asthmatic wheezing) or digestive allergies (vomiting and diarrhea), but skin allergies are the most common.
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This kind of allergy is the most likely cause of a cat allergic reaction. Fleas inject saliva in the cat when it bites and there are many substances present that can trigger a reaction. Like humans, it is possible to trigger a reaction with a very small amount of irritant. Sometimes only one flea bite is all it takes. The usual symptoms include scabs, thin unthrifty fur in the area and bumps. The cat will want to scratch and bite the irritated area making the reaction worse. It may also lick or groom excessively. Areas most affected is usually at the base of the tail and the area around the lower back. The head and around the ears can also be affected. Sometimes the sores get infected.Flea Allergy Dermatitis (or FAD) is the name of the condition. The sores and scabs are sometimes referred to as Miliary dermatitis. This is a descriptive term used in veterinary medicine to describe a multifocal distribution of skin lesions, with no identifiable pattern. The term miliary means millet-like, as the feel of running one's hands through the coat of an affected cat is comparable to the feeling if a cat's coat contains millet seeds. (from Wikipedia) Although fleas are the most common cause, mosquito bites, ticks, and other insects can cause reactions.The irritation is fairly characteristics and recognizable. Diagnosis is often confirmed by treating the animal for fleas and seeing if there is an improvement. Along with flea treatment of the cat its living area must also be rid of fleas.If flea treatment is ineffective then biopsy or scraping of the affected area might be performed. Further investigation might include subdermal injection of selected irritants and observation of reactions. This is similar to human diagnostic techniques.If the cause is mosquito or other biting fly, removal from exposure will be a good indication of the cause. pageBesides treating the cat and its living quarters to get rid of fleas any side conditions will be treated. If infection has developed in the affected area, then antibiotics might be prescribed.Antihistamines or steroids might be used to deal with irritation and reduce itching. Hyposensitisation therapy might be used. As in human "allergy desensitization--allergy shots" a cat might be injected with gradually increasing doses of flea antigens. This treatment gradually desensitises the immune system and reduces the allergic reaction.Food allergy in cats is not uncommon. This might be triggered by grains in particular wheat, dairy products, eggs, or animal proteins such as fish and beef.Our understanding of atopic illness has improved in recent years, but many questions still remain. As the onset of sensitization and allergic disease is likely a function of intensity, duration and timing of exposure(s), longitudinal studies will provide the most reliable information on whether exposures, such as the presence of cats and dogs, increase the risk of sensitization and allergic disease or protect against the development of atopic outcomes. It would be tempting to test the influence of pet ownership and atopic heredity in a randomized controlled trial, but practical and ethical concerns make this impossible. To achieve a better understanding of the role of environmental factors, including cat and dog exposures, in the development of atopy, more standardized and validated exposure assessment methods are needed in the future. Objective exposure assessment is crucial in order to elucidate potential mechanisms that contribute to the observed effects. It is not always possible to collect information prospectively, but retrospectively collected information may be an important source of recall bias. For example, in a recent study, 40% of the parents who reported physician-diagnosed asthma in data that was collected prospectively, said retrospectively that a physician never diagnosed their child with asthma. Further research focusing on genetic susceptibility and interactions between environmental and genetic factors is important because potential interactive mechanisms may modify the risk of atopic disease. There are data emerging that exposure to a specific environmental agent (e.g., endotoxin) can have different effects in individuals with different genotypes.,