Аllergy in any breed of dog

For a start look at what may become a source of allergy in any breed of dog. Allergies (from the Greek. Allos - other, and ergon - action) - this perverse body's sensitivity to a particular substance, so called. allergen.
Food allergy (food hypersensitivity) is an immunological response to one or more sources of dietary protein. This disease is considered the third most common among cutaneous hypersensitivity in dogs and cats second. 1 Clinical symptoms mainly associated with skin and digestive tract. Allergens may be a variety of substances - from the simplest (iodine and bromine) to the complex of protein and nonprotein. I'll list them in order of most "popular" in Ridgeback: Food. First of all: cooked and raw meat, poultry, cooked and raw eggs and fish, dairy products, soybeans and products, yeast, red fruits and vegetables, citrus fruits, fish oil, vegetable oils (soy, flaxseed), etc. Stand out sugar and chocolate, spices and salted / smoked / fried foods, which in principle is absolutely contraindicated in any dog.
Drugs. Can cause allergies: any antibiotics, sulfa drugs, Amidopyrine (aspirin), phenylbutazone, barbiturates, chloral hydrate, digitalis drugs, morphine, quinine, vaccines and serums that are based on live bacteria, procaine, bee / flower pollen, alfalfa (alfalfa extract) vitamins on the basis of brewer's yeast (often - vitamin B complex), injections of vitamin B1.
Household chemicals / cosmetics. Often, after shampooing with Ridgeback itching, dandruff and other signs of contact dermatitis (a type of allergy). It is therefore recommended to wash Ridgeback only hypo-allergenic shampoos. Other allergens of this group may include household chemicals, which we use. However, the dogs have access to it is extremely rare.
Epidermal allergens. Ie hair, wool, animal dander. Some Ridgeback can be observed are allergic to their own dead hair during moulting season.
Parasites, and insects. Fleas, ticks, bees, mosquitoes, etc. - Their bites can also trigger allergic reactions in dogs (not necessarily only the Ridgeback).
Biological organisms. In particular: pathogenic and pathogenic bacteria, viruses, fungi, helminths (worms, etc.). Such an allergy is called contagious.
Autoallergeny. In rare cases, the body can itself produce allergens. Usually this is associated with severe immune disorders and autoimmune diseases.