Dog Hot Spots in Different Seasons: Summer vs. Winter

Dogs are our loyal companions, and as responsible pet parents, keeping them comfortable, happy, and healthy is always our top priority. One of the most common health issues dogs face, especially when seasons change, is skin problems. Among these, hot spots (also called acute moist dermatitis) rank at the top.

Hot spots are painful, red, inflamed, and infected patches on a dog’s skin. They can appear suddenly and spread quickly, especially if your dog keeps scratching, biting, or licking the area. While hot spots can occur any time of the year, their causes and severity often vary between summer and winter.

In this detailed guide, we will explore everything about hot spots on dogs.

By the end, you’ll understand how to identify, manage, and prevent seasonal hot spots in dogs, ensuring your furry friend enjoys comfort all year round.

What Are Dog Hot Spots?

Hot spots, medically known as acute moist dermatitis, are localized areas of inflamed, infected skin. They usually appear as:

• Red, swollen, and moist patches
  
  

• Circular sores with hair loss around the site

• Oozing discharge or crusty scabs

• Extremely itchy and painful to the touch

Dogs tend to make hot spots worse by licking, scratching, or biting the affected area. These sores can grow rapidly within hours, making immediate attention critical.

Common Causes of Hot Spots in Dogs

• Flea bites or other insect bites

• Skin allergies (environmental, food-related, or contact)

• Moisture trapped in the coat (after swimming or bathing)

• Underlying infections

• Stress or boredom leading to excessive licking

• Seasonal changes affecting skin moisture and allergens

While hot spots can strike at any time, the triggers often change depending on whether it’s summer or winter.

Dog Hot Spots in Summer

Summer is often the peak season for hot spots. The combination of heat, humidity, and allergens makes dogs more vulnerable to skin infections.

Causes of Summer Hot Spots

1. Flea and Tick Bites

   • Warm weather is ideal for fleas, ticks, and mites. Even one flea bite can trigger an allergic reaction (flea allergy dermatitis) that develops into a hot spot.

2. Moisture and Heat

   • Dogs love swimming in pools, lakes, or the ocean during hot months. If their coat doesn’t dry properly, trapped moisture creates a perfect breeding ground for bacteria.

3. Environmental Allergies

   • Pollen, grass, and mold are at their highest in summer. Dogs playing outdoors may come in contact with allergens, leading to itching and scratching that creates hot spots.

4. Sweat and Skin Folds

   • While dogs don’t sweat like humans, moisture builds up in skin folds (especially in breeds like Bulldogs, Pugs, and Shar Peis). This environment easily develops into hot spots.

5. Increased Scratching from Heat Irritation

   • Dogs may scratch more during hot weather due to dryness or irritation, accidentally breaking the skin and causing infection.

Summer Hot Spot Risk Factors

• Breeds with thick coats (Golden Retrievers, Labradors, Huskies)

• Dogs that swim frequently

• Dogs with existing flea or pollen allergies

• High-humidity environments

Dog Hot Spots in Winter

Many pet parents assume that hot spots are only a summer issue, but winter comes with its own set of challenges. Cold weather, indoor heating, and less time outdoors can all contribute to hot spot formation.

Causes of Winter Hot Spots

1. Dry Skin

   • Indoor heating and cold outdoor air dry out a dog’s skin. Dry, flaky skin makes dogs itchy, leading to scratching and possible hot spots.

2. Reduced Grooming

   • Dogs with thick winter coats may develop matted fur, which traps moisture and bacteria. This is particularly common in double-coated breeds.

3. Indoor Allergens

   • In winter, pets spend more time indoors, where allergens like dust mites, mold, and cleaning chemicals can irritate their skin.

4. Reduced Outdoor Activity

   • Dogs may lick or chew excessively due to boredom or stress when walks and playtime decrease in cold weather. This self-trauma often develops into hot spots.

5. Clothing and Blankets

   • While dog sweaters and blankets help keep pets warm, friction or trapped moisture can irritate the skin.

Winter Hot Spot Risk Factors

• Breeds prone to dry skin (Greyhounds, Dobermans)

• Long-haired breeds with dense coats

• Dogs spending most of their time indoors

• Dogs with pre-existing skin allergies

Summer vs. Winter: Key Differences in Hot Spots

Factor	Summer	Winter
Main Trigger	Heat, humidity, outdoor allergens, fleas	Dry skin, indoor allergens, reduced grooming
Risky Breeds	Thick-coated, swimming breeds	Long-haired, dry-skin-prone breeds
Hot Spot Location	Ears, belly, paws, skin folds	Back, flanks, under coat mats
Environmental Role	Pollen, grass, insects	Dry heat, dust mites, mold
Prevention Focus	Flea/tick prevention, drying after swims	Moisturizing, indoor allergen control

How to Treat and Prevent Dog Hot Spots

Whether caused by seasonal changes or indoor allergens, treatment for hot spots usually involves a combination of medical care, grooming, and environmental management.

Step 1: Immediate Relief

• Trim the hair around the hot spot to allow airflow.

• Clean the area with a vet-approved antiseptic or mild chlorhexidine solution.

• Apply an antibiotic ointment or anti-itch spray recommended by your vet.

  Dog hot spots can strike any time of year—itchy, red, and painful in summer due to heat, fleas, and humidity, or dry and irritated in winter from indoor air and allergens. That’s why many pet parents turn to Puainta® Quantum Silver Skin Spray for Dogs and Cats.

  This gentle yet effective spray combines the power of quantum silver with soothing plant extracts, helping support skin comfort and renewal in areas prone to occasional hot spots. Whether your dog struggles with summer moisture-related irritation or winter dryness and sensitivities, this spray helps maintain a balanced, healthy skin environment while encouraging the skin’s natural defenses. Safe for daily use, it’s ideal for pets of all ages and a smart addition to your pet care routine.
  
  

• Use an Elizabethan collar (cone) to prevent licking.

Step 2: Address the Underlying Cause

• Summer: control fleas and ticks, dry coat thoroughly, reduce exposure to pollen.

• Winter: use humidifiers, brush regularly to prevent matting, avoid over-bathing.

• Indoor Allergies: wash bedding weekly, vacuum frequently, use pet-safe cleaners.

Step 3: Veterinary Treatment

• Oral antibiotics if infection is severe.

• Steroids or anti-itch medication for inflammation.

• Allergy testing and long-term allergy management (immunotherapy, special diets).

Step 4: Holistic Support

• Omega-3 fatty acid supplements for skin health.

• Probiotics to strengthen immunity.

• Natural remedies like oatmeal baths or coconut oil (with vet approval).

Seasonal Hot Spot Prevention Tips

Summer Prevention

• Use flea and tick prevention consistently.

• Bathe after swimming and dry thoroughly.

• Limit outdoor activity during high pollen counts.

• Keep coat trimmed but not shaved.

Winter Prevention

• Use a humidifier indoors.

• Avoid overheating your home.

• Brush daily to prevent mats.

• Wash bedding with hypoallergenic detergent.

Frequently Asked Questions (FAQ)

1. What season are dogs most likely to get hot spots?

Dogs are more likely to get hot spots in summer due to fleas, humidity, and outdoor allergens. However, winter also brings risk due to dry skin and indoor allergens.

2. Can indoor allergies cause hot spots in dogs?

Yes, indoor allergens like dust mites, mold, and cleaning chemicals can trigger itching and scratching, which often lead to hot spots.

3. How do I prevent my dog from getting hot spots in the summer?

Use flea/tick preventatives, dry your dog after swimming, and limit exposure to pollen and grass allergens.

4. Why does my dog get hot spots every winter?

Dry indoor air, less grooming, and indoor allergens like dust often cause recurring hot spots during winter.

5. Can hot spots heal on their own?

Mild hot spots may heal with home care, but most require veterinary treatment to prevent infection.