How to Treat Hot Spots on Dogs (and Stop Them From Coming Back)

One evening your dog's coat looks perfectly normal. By the next morning there's a raw, red, weeping patch the size of a coin — and your pup can't leave it alone. That angry patch is almost certainly a hot spot, one of the most common (and most frustrating) skin problems dog owners face. The good news: once you understand what triggers hot spots on dogs, you can help them heal faster and keep them from coming back.

What Are Hot Spots on Dogs?

Hot spots are recurring for many dogs, so spotting the pattern matters — our My Pet Journal gives you a place to note where each one appeared, what happened the day before, and how quickly it healed.

Vets call a hot spot acute moist dermatitis (or pyotraumatic dermatitis). It starts with an itch. Your dog licks, chews, or scratches, which damages the skin's surface. Bacteria that normally live harmlessly on the skin take advantage, the area becomes inflamed and itchier, and the dog scratches even more. That cycle can turn a tiny irritation into a large, painful sore in just a few hours.

Typical signs include:

• A red, moist, or oozing patch of skin, often with a clear edge
• Hair loss over the area, or fur matted down with discharge
• A bad smell coming from the spot
• Constant licking, chewing, or scratching at one place
• Flinching or crying when the area is touched

Hot spots most often show up on the head, neck, and cheeks, the hips, the base of the tail, and the legs — anywhere a dog can easily reach with teeth or paws.

What Causes Hot Spots in Dogs?

A hot spot is really a symptom of something else that made your dog itchy or uncomfortable in the first place. Common triggers include:

• Fleas and flea allergy: one of the most frequent culprits, especially for spots near the rump and tail base.
• Environmental or food allergies: pollen, dust mites, and certain proteins can leave skin chronically itchy.
• Ear infections: a dog scratching at a sore ear often creates a hot spot on the cheek or neck.
• Trapped moisture: a thick coat that stays damp after swimming, rain, or a bath is a perfect setup.
• Mats and dense undercoat: tangled fur holds heat and moisture against the skin.
• Anal gland discomfort, pain, or boredom: dogs sometimes lick at a sore joint or out of stress.

Thick-coated breeds such as Golden Retrievers, Labradors, German Shepherds, and Newfoundlands are especially prone, and hot spots tend to spike during warm, humid weather.

Because a hot spot is usually a sign of a deeper trigger, it's worth having your vet look at the first one — and any that keep coming back — so the root cause, not just the sore, gets addressed.

How Hot Spots Are Treated

Many hot spots need a vet visit, especially if they're large, spreading, or very painful. Treatment usually follows a few steps:

• Clipping the hair around the sore so air can reach it and it can dry out.
• Gently cleaning the area with a pet-safe antiseptic your vet recommends.
• Medication to calm itching and inflammation, sometimes with antibiotics if the infection runs deep.
• Breaking the lick cycle with a cone or recovery collar so the skin can finally heal.

Avoid reaching for human first-aid products. Hydrogen peroxide and rubbing alcohol can damage healing tissue and sting, tea tree oil is toxic to dogs, and thick ointments can trap moisture and make things worse. With proper care, most hot spots start drying out within a few days and heal over in about a week or two.

Hot spots can look worse — and hurt more — than you'd expect, so if your dog snaps when you approach the area, let your vet handle the clipping and cleaning rather than forcing it at home.

When a Dog Hot Spot Needs the Vet Right Away

Call your veterinarian promptly if the spot is larger than a coin, spreading quickly, oozing pus, near the eyes, or if your dog seems lethargic, feverish, or off their food. Hot spots that return again and again are also a signal to dig into allergies or other underlying issues with your vet.

How to Prevent Hot Spots on Dogs

A loose, well-groomed coat lets skin breathe, and regular sessions with our Luxury Dog and Cat Brush help lift out dead undercoat and work through tangles before they turn into moisture-trapping mats.

• Stay on top of flea prevention year-round, using a product your vet recommends.
• Dry thoroughly after swims, baths, and rainy walks — especially the neck, armpits, and tail base.
• Brush regularly, more often during shedding season for double-coated breeds.
• Manage allergies and ear health with your vet so the itch never gets started.
• Keep your dog busy with walks, puzzle toys, and play to cut down on boredom licking.

The Bottom Line on Dog Hot Spots

Hot spots appear fast and look alarming, but they're very treatable once you break the itch-lick cycle and find out what started it. Watch for that first patch of damp, matted fur, keep your dog's coat clean and dry, and loop in your vet early. A little prevention goes a long way toward keeping your dog's skin calm and comfortable all year.

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Paris Deesing holds a degree in Biological Anthropology from UCLA and provides the editorial review behind each article, drawing on a long-held curiosity about the animals who share our lives.

This article was created using artificial intelligence with human editorial review and oversight.