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What are Hot Spots?

Canine acute moist dermatitis is a form of canine pyoderma also known as “hot spots.” Hot spots are red, moist, irritated patches of skin often caused by an initial irritation and then exacerbated by bacterial infection. The irritated patch can double in size within hours and can become very painful. Common sites of lesions are the head, neck, hips and limbs. Matting of fur, hair loss, scabbing and oozing are often seen. Hot spots seem to be more common in long-haired dog breeds and are more prevalent during summer months in times of high temperature and humidity. Hot spots are the result of a bacterial infection. Your dog's skin becomes irritated and the dog starts itching, licking, or both, eventually causing a red, ugly, oozing sore.  The sore can only be treated by addressing the underlying infection.

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Hot Spots Average Cost

From 12 quotes ranging from $200 - $500

Average Cost

$300

Symptoms of Hot Spots in Dogs

Symptoms of a hot spot may include one or more of the following:

  • Itchy, painful patch of skin
  • Continual chewing or licking at site
  • Abnormal aggression (associated with painfulness of site)
  • Possible depression (associated with painfulness of site)
  • Inflammation, redness, and swelling in a localized patch of skin
  • Crusted scabs or oozing sores
  • Dry scaly skin
  • Hair loss
  • Moist, matted fur
  • Foul odor from lesion
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Causes of Hot Spots in Dogs

Possible causes of initial irritation can be any one of the following:

  • Flea allergies
  • Cuts or abrasions
  • Ear infection/anal gland infection
  • Foreign objects (splinters/thorns)
  • Food allergies
  • Matted fur
  • Insect bites
  • Chewing or licking due to stress or boredom
Process
  1. Hot spots on dogs are usually the result of an imbalance in the normal bacteria (Staphylococcus intermedius) on the skin.
  2. The bacterial imbalance is most often brought about by some initial irritation that the pet bites or scratches at repeatedly.
  3. Biting and chewing can introduce bacteria from the mouth and nose to disrupted hair follicles at the site of irritation.
  4. Moisture and heat from matted hair, summer warmth and humidity or open scrapes or cuts can further exacerbate bacterial growth.
  5. Bacterial growth causes the body's immune response to react, resulting in more itching, heat, redness, inflammation and pain.
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Diagnosis of Hot Spots in Dogs

If you notice your pet is showing symptoms of a hot spot, you may try an over the counter medication to clean and treat at home. Since hot spots are painful and can worsen within a matter of hours, it is advisable to schedule a visit to a clinic to receive proper treatment.

The veterinarian will take a thorough history and conduct a physical exam to determine the initial irritant. It is important to let your veterinarian know when the onset of symptoms began and any unusual circumstances that may have led to the irritation so the doctor can identify possible allergens or stressors and address them in treatment.

The area will likely be shaved and cleaned to determine severity and size. Shaving and cleaning is also necessary to properly clean and air the lesion. In cases where other forms of pyoderma are suspected, the veterinarian may examine bacterial samples under the microscope or culture a sample for diagnosis.

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Treatment of Hot Spots in Dogs

Cleaning

The lesion must be cleaned thoroughly. Matted fur should be shaved off and away from the affected area. Because this can be quite painful, it is a good idea to bring the pet to the veterinarian where nurses can clean and shave the area. Some level of sedation may be necessary. A topical antiseptic such as chlorhexidine can then be used to clean the lesion.

Treating Bacterial Infection

Topical and/or oral antibiotics will often be administered. Antibiotic treatment may last 4 weeks or longer, especially if the infection is deep.

Treating Initial Irritation

Some cases of hot spots are idiopathic (the cause is unidentifiable). More commonly, allergies to fleas, pollen or food are identified with a history and examination. Monthly flea treatments or hypoallergenic diets can address allergies. Regular grooming or keeping fur cut short can prevent matting, a common cause of skin irritation. Anxiety-induced chewing and licking can be lessened by introducing toys or chews and exercise and play.

Medications for Pain and Inflammation

Antihistamines may be prescribed to reduce itchiness and irritation. NSAIDS can be prescribed to reduce inflammation. A short acting corticosteroid may be administered one time to make the patient more comfortable and promote healing (however never at the same time as an NSAID). Gentamicin/Betamethasone sprays are often prescribed to spray on the lesion daily.

Dietary supplements

Essential fatty acids may be suggested for pets prone to skin conditions.

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Recovery of Hot Spots in Dogs

Follow up veterinarian appointments may or may not be necessary, depending on the severity of the lesion. Most cases resolve quickly if the initial irritant is addressed and the proper treatment regimen is followed.

An Elizabethan collar (“E-collar” or “cone”) should be used to prevent chewing or licking at the hot spot. Regular grooming can help prevent hot spots from developing. If you cannot groom your pet regularly, you may consider keeping the hair clipped short or shaved to prevent matting. Follow a monthly flea control program. Maintain a stress free environment in the home. Eliminate loud noises, introduce toys and chews, and provide your pet with exercise and play. Maintain an appropriate hypoallergenic diet if your veterinarian suspects food allergies.

Healing may not be apparent for 1-2 weeks. Fur should begin to grow back in 3-4 weeks. Scarring is not often a problem except in severe cases. If hot spots continue, further diagnostics may be required to determine the cause.

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Hot Spots Average Cost

From 12 quotes ranging from $200 - $500

Average Cost

$300

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Hot Spots Questions and Advice from Veterinary Professionals

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Maltipoo

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Seven Years

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Unknown severity

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1 found helpful

pill-rating-filledpill-rating-filledpill-rating-filledpill-rating-filledpill-rating-filled

Unknown severity

Has Symptoms

Redness

My dog has a hot spot under his belly by left leg. He keeps licking it. Can I apply vaseline to that area or is there another product I should use

Sept. 26, 2020

Owner

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Dr. Michele K. DVM

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1 Recommendations

Thank you for your question. I apologize for the delay, this venue is not set up for urgent emails. Since I cannot see that area or what is looks like, I can't say what ointment might help. Hot spots are typically bacterial infections, and often need antibiotics. If he is still having problems, It would be best to have your pet seen by a veterinarian, as they can examine them, see what might be going on, and get treatment for them.

Oct. 16, 2020

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Siberian Husky

dog-age-icon

Three Years

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Unknown severity

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1 found helpful

pill-rating-filledpill-rating-filledpill-rating-filledpill-rating-filledpill-rating-filled

Unknown severity

Has Symptoms

Itching,

First I found like a rash on the side of his leg and started using hidrocortizone And it’s better now , but today I found like a hot spot on the tail red it is ok to treated wit the same medication while I get the vet appointment? I’m just worried about it

Sept. 11, 2020

Owner

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Dr. Michele K. DVM

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1 Recommendations

Thank you for your question. Thick coated breeds like huskies are very prone to hotspots, and the best thing to do for the lesions is to keep them dry. Washing the area twice a day with a gentle chlorhexidine solution like hibiclens and rinsing well may help until you can have him seen by your veterinarian. The cortisone ointment might help keep him from itching it, but probably won't help it heal otherwise. I hope that you were able to have him seen soon and everything goes well for him.

Sept. 11, 2020

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Hot Spots Average Cost

From 12 quotes ranging from $200 - $500

Average Cost

$300

Vet bills can sneak up on you.

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