What Causes Hot Spots on Dogs? Relief & Care - Scout Care

You were petting your dog and found a raw, wet patch of skin under the fur. It looks angry, and your dog won't stop licking it. Your dog has found it, and they are absolutely committed to making it worse. That's a hot spot, and the faster you deal with it, the easier it is to treat.

What Are Hot Spots on Dogs?

Hot spots, technically called acute moist dermatitis or pyotraumatic dermatitis, are areas of intensely inflamed skin that develop when a dog licks, scratches, or chews at the same spot repeatedly. The skin breaks down, bacteria move in, and the result is a moist, red, painful skin lesion that can grow fast.

Canine hot spots can appear anywhere, but they're most common around the neck, hindquarters, and face. What starts as a small patch of skin irritation can spread significantly in just a few hours.

What Causes Hot Spots in Dogs?

Any itch that turns into self-trauma can trigger one. Common underlying causes include:

• Flea allergy dermatitis: Even one or two flea bites can set off intense scratching and licking in sensitive dogs. Regular flea and tick prevention significantly reduces the risk.
• Seasonal allergies: Seasonal allergies from pollen, grass, dust mites, and mold all spike at different points throughout the year, causing skin irritation that leads to scratching.
• Food allergies and food sensitivities: Dogs with food-related skin issues tend to have recurring hot spots rather than isolated flares.
• Ear infections: Dogs with ear infections often scratch at their ears and neck constantly, which sets the stage for hot spots nearby.
• Mites: Skin inflammation from mites causes intense itching.
• Matted fur: Moisture trapped in matted fur creates ideal conditions for bacterial infection and skin inflammation.
• Insect bites: A single bite from a mosquito can set off a scratching cycle that becomes a hot spot.
• Boredom or anxiety: Dogs that are under-stimulated sometimes lick and chew obsessively as a coping behavior.

Basically, if your dog has an itch and the self-control of a golden retriever at a barbecue, a hot spot is on the table. Dogs are not great at leaving things alone. That's most of the problem.

How Do You Know If Your Dog Has a Hot Spot?

Once you know what to look for, hot spots are usually easy to identify:

• A moist, red, inflamed patch of skin
• Hair loss around the affected area
• Swelling and scabbing as it develops
• Pus or discharge in more advanced cases
• Your dog constantly licking, scratching, or chewing the same spot

The tricky part is that hot spots can grow fast. A small patch can become significantly larger within 24 hours if your dog keeps at it.

What Can You Do at Home?

A few steps can help stop the cycle while you're waiting to get your dog seen:

• Keep your dog from licking the spot. An Elizabethan collar (the classic cone) or an e-collar is the most effective way to stop the self-trauma that makes hot spots worse.
• Gently clip the fur around the area if you can. Moisture trapped under the coat keeps the infection going.
• Don't apply human antiseptics, hydrogen peroxide, or random ointments. Some products irritate already inflamed skin.

Home care can help short-term, but most hot spots need veterinary treatment to heal properly and quickly.

How Are Hot Spots Treated?

Treatment for hot spots on dogs typically involves:

• Clipping and cleaning the area so it can dry out and medications can work.
• Topical medications or ointments to fight the bacterial infection and calm skin inflammation.
• Oral antibiotics for more serious infections that have spread deeper into the skin.
• Antihistamines or corticosteroids to control the underlying itch and reduce swelling.
• An e-collar to keep your dog from reopening the lesion while it heals. The cone is not optional (unless your vet says so). Your dog's feelings about the cone are noted and overruled.

Treating the hot spot itself is step one. If allergies, fleas, or another underlying issue is driving the problem, addressing that root cause is what prevents future flares.

When Should You Go to Scout Pet Urgent Care?

Chicago dog owners dealing with a hot spot should come in to Scout Pet Urgent Care when:

• The hot spot is spreading quickly or is already larger than a few centimeters
• The skin lesion looks deep, is oozing pus, or has an odor
• Your dog is in visible pain or refusing to let you near the area
• Home care isn't slowing the spread
• Your dog has a history of skin infections and this one looks worse than usual

At Scout Pet Urgent Care, your veterinarian will explain what's going on and lay out your options clearly. The next step is always a decision you make together.

Frequently Asked Questions

Can hot spots go away on their own?

Rarely. Without treatment, most hot spots get worse because dogs keep licking and chewing at them. The faster you intervene, the less skin is affected. Taking your dog to an urgent care vet like Scout is going to be your best bet.

Are some dogs more likely to get hot spots?

Golden retrievers, Labradors, and German shepherds tend to be more prone because of their coat types and predisposition to skin issues. Dogs with seasonal allergies or flea allergy dermatitis are also at higher risk.

What's the difference between a hot spot and ringworm?

Hot spots are bacterial skin infections caused by self-trauma, while ringworm is a fungal infection. Ringworm tends to be circular, dry, and scaly rather than wet and inflamed. A vet exam can distinguish between them.

How long does a hot spot take to heal?

With proper treatment, most hot spots start improving within a few days and are fully healed within a week or two. Larger or deeper skin lesions take longer.

Do I need to shave my dog's fur around a hot spot?

Clipping the fur around the hot spot is standard practice. It helps the area dry out and makes topical treatments more effective. Your vet will typically do this as part of treatment.

Scout Pet Urgent Care Is Here to Help Your Dog With Hot Spots

Hot spots can go from minor to miserable fast. If your dog is chewing at a raw patch of skin, Scout Pet Urgent Care is here. Same-day and walk-in appointments available at our Chicago locations. Book online or stop in anytime from 10 AM to 8 PM.