Allergies in Dogs
Here are a few of the different types of allergies a dog can have.
Flea Allergies
An allergy to fleas is the most common skin disease seen in dogs. The bite of just one or two fleas per week is enough to make affected dogs itch. Flea saliva is believed to be the allergen that causes the itchiness.
Seasonal/Environmental Allergies

Also known as atopy, seasonal or environmental allergies are caused by substances that exist in your home, backyard, and anywhere else your dog spends time.
These allergens can be inhaled, as with pollen, as well as absorbed through the skin when your dog touches them. Common triggers (allergens) for these allergic reactions include pollens, plant or animal fibers, dust mites, and mold spores.
Read also: General dog care
Food Allergies
These are also known as adverse food reactions. Dogs can develop an allergy to a particular food at any point during their life, regardless of whether they have eaten these brands or types of foods in the past.
The most common food allergy for dogs is to a protein source in the diet, but sometimes the allergy is to grains and/or other ingredients.
Dog Allergies Signs
Dog allergies signs can include:
Itchy skin
Scratching
Licking
Face rubbing
Red skin
Loss of fur
Recurrent skin and ear infections
Gastrointestinal (GI) signs
The type and severity of these dog allergies signs depend partly on the type of allergy your dog has.Signs of Flea Allergy Dermatitis in Dogs
The most common symptom of flea allergy dermatitis is itchy skin and irritation at the base of the tail, although other areas of the body may also be affected.
Read also: How to house train your dog or puppy
Seasonal/Environmental Allergy Signs in Dogs
Common symptoms include scratching/itchy skin, licking (especially the paws), and face rubbing. Affected dogs may also experience red skin, loss of fur, and recurrent skin and/or ear infections. You may see red skin or fur loss on your dog’s paws and lower legs, face, ears, armpits, and belly.
Signs of Food Allergies in Dogs
The symptoms of food allergies are often the same as for seasonal/environmental allergies. There may also be GI signs, such as diarrhea, vomiting, or an increased number of bowel movements per day.
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