What Is a Hot Spot on a Dog and How Do You Treat It?

If you’ve ever noticed your dog obsessively licking, scratching, or chewing one spot on their body, you may be dealing with a hot spot. So, what is a hot spot on a dog? A hot spot is a localized area of inflamed, infected skin that develops quickly and can grow larger within hours if left untreated. These painful lesions are one of the most common skin conditions vets see, and knowing how to recognize them early can make a big difference in your dog’s comfort and recovery.

At Murieta Pet Hospital in Rancho Murieta, CA, our veterinary team sees hot spots in dogs of all breeds and ages, but some dogs are far more prone to them than others. Understanding what causes hot spots and how they’re treated is the first step toward keeping your dog’s skin healthy.

What Is a Hot Spot on a Dog?

A hot spot, also called acute moist dermatitis, is a rapidly developing skin infection caused by a dog’s repeated licking, biting, or scratching of a single area. The moisture from saliva creates the perfect environment for bacterial growth, which triggers inflammation, redness, hair loss, and oozing discharge. Hot spots can appear anywhere on the body but are most commonly found on the head, neck, hips, and legs.

What Does a Hot Spot Look Like?

Hot spots are typically moist, red, and raw in appearance. The affected area may be:

• Wet or oozing with a yellowish or bloody discharge
• Missing fur due to the dog’s constant attention to the area
• Surrounded by matted hair that traps bacteria and moisture
• Warm and painful to the touch

The edges of a hot spot are usually well-defined, which helps distinguish them from other skin conditions like ringworm or mange.

How Fast Do Hot Spots Develop?

A small patch of irritated skin can double or triple in size within 24 to 48 hours. The faster you act, the easier the hot spot is to treat and the less discomfort your dog will experience.

What Causes Hot Spots in Dogs?

Hot spots are triggered by anything that causes a dog to itch and then self-traumatize the skin. The underlying cause matters because treating the hot spot without addressing the root issue often leads to recurrence.

Common Triggers Include:

• Allergies — Environmental, food, or contact allergies are among the most frequent causes of hot spots in dogs
• Flea bites — Even a single flea bite can cause intense itching in sensitive dogs, leading to a hot spot
• Ear infections or anal gland issues — Dogs that scratch near their ears or scoot along the ground can accidentally create a hot spot
• Moisture trapped in the coat — Dogs that swim frequently or have thick, dense coats are especially vulnerable
• Stress or boredom — Some dogs develop hot spots due to compulsive licking behaviors linked to anxiety

Which Dogs Are Most Prone to Hot Spots?

Any dog can develop a hot spot, but certain breeds are genetically predisposed due to their coat type or skin folds. Dogs most at risk include:

• Golden Retrievers
• Labrador Retrievers
• German Shepherds
• Saint Bernards
• Rottweilers

Dogs with thick double coats are especially susceptible because moisture and debris get trapped close to the skin. Regular grooming is particularly important for these breeds to reduce the risk of hot spots forming.

How Are Hot Spots Diagnosed?

Diagnosing a hot spot on a dog usually involves a physical examination by your veterinarian. Your vet at Murieta Pet Hospital will examine the size, depth, and severity of the lesion, and may clip the surrounding fur to get a clearer view of how far the irritation extends. In some cases, a skin scraping or culture may be performed to rule out fungal infections or identify the specific bacteria involved.

It’s important not to assume every skin lesion is a hot spot. Conditions like mange, ringworm, and pyoderma can look similar, which is why a professional diagnosis is always the right move.

How Do Vets Treat Hot Spots in Dogs?

Veterinary treatment for hot spots focuses on stopping the self-trauma, clearing the infection, and allowing the skin to heal. The approach will vary based on the severity of the hot spot.

Typical Hot Spot Treatment Steps

When a dog with a hot spot visits Murieta Pet Hospital, treatment generally includes:

• Clipping the area — Removing fur around the hot spot allows air to reach the skin and makes it easier to clean and treat
• Cleaning the wound — Your vet will gently clean the area with an antiseptic solution to remove bacteria and discharge
• Medications — Depending on the severity, your dog may be prescribed topical or oral antibiotics, anti-inflammatory medications, or a combination of both
• An e-collar — Preventing your dog from licking or chewing the area is essential for healing; a cone or recovery collar is often used

Can Hot Spots Heal on Their Own?

Hot spots rarely resolve without treatment. Because the infection is bacterial and the dog’s continued licking keeps the wound moist and irritated, the condition almost always gets worse without intervention. Prompt veterinary care is the most effective path to relief.

Preventing Hot Spots in Dogs

Once your dog has had a hot spot, preventing future occurrences becomes a priority. While not every hot spot is avoidable, there are several steps you can take to reduce your dog’s risk.

Proactive prevention strategies include:

• Keeping your dog’s coat clean, dry, and regularly groomed
• Staying current on flea and tick prevention
• Addressing underlying allergies with the help of your veterinarian
• Drying your dog thoroughly after baths or swimming
• Managing anxiety or boredom through exercise, enrichment, and behavioral support

If your dog is repeatedly developing hot spots, our team at Murieta Pet Hospital can help identify the underlying trigger and create a long-term management plan.

When to See a Vet for a Dog Hot Spot

If you notice a moist, red, irritated patch of skin on your dog, especially if your dog won’t stop licking or chewing at it, it’s time to schedule a veterinary visit. Hot spots on dogs are painful, and early treatment leads to faster healing and less suffering for your pet.

Murieta Pet Hospital in Rancho Murieta, CA is here to help when your dog’s skin needs attention. Don’t wait for a small hot spot to become a bigger problem, the sooner your dog is seen, the sooner they can get comfortable again. Call (916) 885-0288 or book an appointment online!