Contact allergies and hypersensitivities:

An allergy is an exaggerated hypersensitivity reaction on some components of the immune system. Despite the fact that the majority of known allergens are common among individuals, the unique and individual character of each agency’s reaction is the most characteristic.

If you would like to simplify them, we could group them into three groups according to the allergens causing these: (There are many allergens more minority but no less important) – Food Allergies: Allergens would be food components, among which the most prominent are proteins. Despite having animal protein that statistics are at the top of the list, the food reactions can be caused by a lot of food.

– Allergies to the chopped (saliva) of certain insects, in particular of the flea: The saliva of these parasites cause a high hypersensitivity in the canine and feline species. In addition to go well wormed externally to prevent the spread of systemic diseases by ectoparasites, it is important to keep them away from our animals to avoid the possible allergic reactions.

-Environmental allergy or Atopy: It is of course the most well-known and not for little reason, as it is the larger group and with more ease to find the interactions among its components. To simplify this group, we could mention two subgroups: allergens in the pollens and allergens dust mites. The signs of allergies caused by pollen usually appear sporadically during the year, depending on the species of plant in the spring or autumn. On the contrary, we have constantly in house dust mites, and therefore, we would have more consistent signs.

In addition, in this article we will mention a subgroup that could be within environmental allergies that would be allergic reactions by contact: These, as its name indicates, would arise when the animal is in direct contact with the allergen and usually occur in the same area where they have contacted. We could include within this group allergies by rubbing with some plants like the sting of some insects.

It should be noted when we talk about insect allergies caused by mosquito bites or by direct contact with the pine processionary caterpillar (track), which create a facial angiedema (swelling of the face) along with a glossitis (inflammation of the tongue) and is often also associated with systemic signs such as vomiting and apathy.

Also remember that the most common signs would be the pruritus (itching) and erythema (redness) of the skin, but perhaps the most visible would be the signs, self-induced side effects caused by scratching or injury by secondary infections of bacteria and/or yeast infections that take advantage of the low defense and inflammation of the skin in a allergic process to be established, cause damage epithelial cells and increase the itching.

From the Veterinary Hospital of Catalonia we recommend going to the onset of symptoms, and if this is not the case because they were mild, to comment on possible behavioral or skin changes in the annual periodic reviews to be able to detect the problem as soon as possible.