All About Dog Allergies

During 50 years of owning and loving dogs, Carole Curtis has
unearthed some enlightening facts about dogs and their allergies

About Carole

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Do you think your dog has hot spots?

So what are hot spots

Dog hot spots occur as single, intensely itchy (pruitic) lesions resulting from self-inflicted trauma to the skin. This is because they are extremely irritating and painful. In an effort to alleviate the constant irritation and pain, dogs will lick or gnaw away at themselves. This leads to further trauma, inflammation and or infection of their skin.

Dog hot spots appear most commonly on:

  • The ears.
  • The face just below the ears.
  • Sides of the chest.
  • The flanks.
  • The rump.
  • Near the rectum.

Dog hot spots symptoms characteristically present as:

  • Extremely itchy, circular patches that vary in size.
  • Red, painful, swollen, moist and sometimes ulcerated areas of skin.
  • Loss of hair or matted hair very often coated with a serous smelly discharge, which eventually crusts over.
  • Thickening and/or scarring of the dog’s skin may occur due to its continual self-trauma of licking and chewing.

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Causes of dog hot spots

Hot spots fall into four distinct categories, allergic reactions to allergens, parasitic, pathological and breed related.

Allergic Reactions

Allergy related dog hot spots can happen within minutes of a dog being exposed to an allergen it is allergic to, causing symptoms of intense itchiness and/or pain.

Allergic reactions are the main causes for hots spots in dogs and in particular dogs which have a predisposition to allergy symptoms associated with the following allergens:

  • Insect bites and in particular Fleas
  • Insect stings, e.g. wasp stings.
  • Atopic (something the dog breaths in).
  • Food (something the dog ingests).
  • Allergic reaction to an injection site.
  • Small cuts and nicks from clipping and grooming.
  • Burs.
  • Grass awnings.

Parasitic

  • Ringworm (Dermatophytosis).
  • Mange.
  • Yeast infections.

Pathogenic

  • Canine Staphylococcal Pyoderma.
  • Auto-immune disorders.
  • Anal gland problems.
  • Panniculitis.
  • Ear infections.
  • Vasculitis.
  • Arthritis.
  • Hip dysplasia.
  • Reaction to certain drugs or medication.

Breed related dog hot spots

Dog hot spots are particularly worrisome for breeds with dense long coats, because it is so easy for burs or grass awnings to embed themselves in a dog’s skin or ears and go un-noticed by owners, even with regular grooming.

Skin allergies are known to be the main underlying causes for dog hot spots.

Breeds which have a predisposition for developing hot spots are Collies, German Shepherds, Golden Retrievers, Labrador Retrievers, and Saint Bernard's.

Breed related dog hot spots are more prevalent in the heat of summer months - the following chart has been designed to help the reader:

  • Identify the most common causes and not so common causes of hot spots.
  • Understand the pathological causes of hot spots.

To view a "Guideline Chart for Causes of Dog Hot Spots" - please click here

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Diagnosis of dog hot spots

Hots spots are easy to diagnose, however, diagnosis of the primary cause is generally made through a process of elimination.

  • The dog is examined for evidence of “flea dirt” (dried blood excreted by fleas), which indicates flea infestation.
  • Skin scrapings are examined under a microscope to ascertain if the dogs has parasitic, yeast or bacterial infections.

  • If an allergy is suspected, allergy testing or an elimination diet will be necessary.
  • Finally, if all else fails to identify the primary cause, laboratory testing for specific immune or metabolic disorders will be necessary.

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Treatment of dog hot spots

Regardless of the subsequent choices for systemic and/or topical treatment of dog hot spots, the following procedures are recommended.

  • A light sedation or topical anaesthetic is normally required to ease the sensitivity and pain associated with treating the lesion.
  • All fur/hair covering and immediately surrounding the lesion should be shaved or clipped.

  • Gently wash with an antimicrobial shampoo containing either benzalkonium chloride or benzoyl peroxide - please check out our selction of dog shampoos and conditioners in our Allergy Free Products page.
  • Take care to ensure that all residual soap is removed and the lesion is patted dry.
  • Then gently pat the hot spot with a hot spot skin oil.
  • Consider using an Elizabethan collar, to prevent further self inflicted trauma of incessant chewing, licking or scratching that will delay healing.

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Prognosis for dog hot spots

Dogs that recover from hot spots frequently develop recurring lesions related to the primary underlying causes (i.e. allergens, parasites, pathological or breed related). Therefore, identification and elimination of the factors that contribute to dog hot spots formation are vital for keeping the condition under control.

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Prevention of dog hot spots

To use an old adage “prevention is always better than a cure”.

Humidity, very often seasonally coincides with primary conditions, which bring on hot spots. Fleas and other parasites thrive in hot, humid weather.

When fleas or other biting or stinging insects are the primary cause of hot spots, systemic or topical flea preventatives or flying-insect repellants i.e. citronella, should be applied to the dog.

If ear infections are the problem, frequent swimming can lead to ear infections that may increase risk for dog hot spots. To minimise ear infections and hot spots, try the following:

  • Cleaning your dog’s ears several times per week and especially after a swim.
  • Dry your pet’s fur/hair thoroughly because a moist coat in humid weather can lead to ear infections, itchy skin and hot spots.
  • Remove you dog’s collar before swimming or dry it thoroughly if he jumps in before you can remove it. Again, any moisture caused by damp collars can bring on the development of a hot spot.

Certain pollens can exacerbate skin allergies leading to hot spots. Keeping your dog indoors during times of the day when pollen counts peak (usually early morning and early evening) helps reduce exposure to pollen.

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Home |  Welcome |  Our Story |  Causes of Allergies |  Dog Allergy Symptoms |  Dog Allergy Treatment |  Allergies to Fleas |  Flea Control Allergies
Dog Hot Spots |  Dog Vaccination |  Vaccination Chart |  Dog Asthma |  Deer Ticks |  Deer Tick Vaccinations |  Mange Mites |  Paralysis Ticks
Do Dogs Get Flu |  Dogs Lick Paws |  Herbal Dog |  Flower Healing |  Hormone Replacement Therapy |  Allergy Free Dogs
Allergy Free Dog Food |  Allergy Free Products |  Insights & Articles |  Useful Links |  Our Privacy Policy |  Disclaimer

Follow these links and soak up the free information to gain a happier, healthier dog who thinks you are the best person on the planet!

Your dogs suffer in silence because they can't tell you about . . .

their painful teeth    |     their flea problems    |     or their allergies

Copyright © 2015 Carole Curtis

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